diff --git a/Layout/default/Preorder/Form.php b/Layout/default/Preorder/Form.php
index 8e82ad06e..9a53e51eb 100644
--- a/Layout/default/Preorder/Form.php
+++ b/Layout/default/Preorder/Form.php
@@ -49,7 +49,7 @@
                   <div class="form-group row">
                     <label class="col-lg-2 col-form-label" for="adb_hausnummer_id">Adresse *</label>
                     <div class="col-lg-10">
-                      <select class="form-control" name="adb_hausnummer_id" id="adb_hausnummer_id" />
+                      <select class="form-control" name="adb_hausnummer_id" id="adb_hausnummer_id" <?=($preorder && $preorder->adb_wohneinheit_id && is_array($preorder->adb_wohneinheit->rimo_workorders) && count($preorder->adb_wohneinheit->rimo_workorders)) ? "disabled='disabled'" : ""?>>
                         <?php if($preorder->adb_hausnummer_id): ?>
                           <option value="<?=$preorder->adb_hausnummer_id?>" selected="selected"><?=$preorder->adb_hausnummer->plz->plz?> <?=$preorder->adb_hausnummer->strasse->ortschaft->name?>, <?=$preorder->adb_hausnummer->strasse->name?> <?=$preorder->adb_hausnummer->hausnummer?></option>
                         <?php endif; ?>
@@ -151,7 +151,7 @@
                   <div class="form-group row" id="wohneinheit_row">
                     <label class="col-lg-2 col-form-label" for="adb_wohneinheit_id">Wohneinheit *</label>
                     <div class="col-lg-10">
-                      <select class="form-control" name="adb_wohneinheit_id" id="adb_wohneinheit_id" />
+                      <select class="form-control" name="adb_wohneinheit_id" id="adb_wohneinheit_id" <?=($preorder && $preorder->adb_wohneinheit_id && is_array($preorder->adb_wohneinheit->rimo_workorders) && count($preorder->adb_wohneinheit->rimo_workorders)) ? "disabled='disabled'" : ""?>>
                       <?php if($preorder->adb_wohneinheit_id): ?>
                         <option value="<?=$preorder->adb_wohneinheit_id?>" selected="selected"><?=$preorder->adb_hausnummer->strasse->name?> <?=$preorder->adb_hausnummer->hausnummer?> <?=$preorder->adb_wohneinheit?><?=($preorder->adb_wohneinheit->extref) ? " (".$preorder->adb_wohneinheit->extref.")" : ""?></option>
                       <?php endif; ?>
@@ -187,7 +187,9 @@
                           <?php if(array_key_exists("interest", $campaign->types)): ?><option value="interest" <?=($preorder->type == "interest") ? "selected='selected'" : ""?>>Interessensbekundung</option><?php endif; ?>
                           <?php if(array_key_exists("provision", $campaign->types)): ?><option value="provision" <?=($preorder->type == "provision") ? "selected='selected'" : ""?>>Vorsorgeanschluss</option><?php endif; ?>
                           <?php if(array_key_exists("order", $campaign->types)): ?><option value="order" <?=($preorder->type == "order") ? "selected='selected'" : ""?>>Vollanschluss</option><?php endif; ?>
+                          <?php if(array_key_exists("legacytransfer", $campaign->types)): ?><option value="legacytransfer" <?=($preorder->type == "legacytransfer") ? "selected='selected'" : ""?>>Bestandsübernahme</option><?php endif; ?>
                           <?php if(array_key_exists("reorder", $campaign->types)): ?><option value="reorder" <?=($preorder->type == "reorder") ? "selected='selected'" : ""?>>Nachbestellung</option><?php endif; ?>
+
                         </select>
                       </div>
                     </div>
diff --git a/Layout/default/Preorder/include/preorder-detail.php b/Layout/default/Preorder/include/preorder-detail.php
index 5b51b019b..61a45576b 100644
--- a/Layout/default/Preorder/include/preorder-detail.php
+++ b/Layout/default/Preorder/include/preorder-detail.php
@@ -404,7 +404,9 @@
                                 <a href="<?=self::getUrl("RimoWorkorder", "downloadAh", ["id" => $wo->id])?>" onclick="event.preventDefault(); downloadWorkorderAha(<?=$wo->id?>);"><i class="fas fa-fw fa-file-download ml-2"></i> AHA Blatt</a>
                                 <small class="text-danger">(beta)</small>
                             </h4>
-                            <small id="preorder-detail-<?=$preorder->id?>-workorder-<?=$wo->id?>-del"><a href="#" onclick="if(confirm('Achtung: Löscht die Workorder in thetool, aber NICHT in RIMO!')) return deleteWorkorder(<?=$preorder->id?>, <?=$wo->id?>)" class="text-danger"><i class="far fa-times-circle"></i> Workorder löschen</a></small>
+                            <?php if($me->is("Admin")): ?>
+                                <small id="preorder-detail-<?=$preorder->id?>-workorder-<?=$wo->id?>-del"><a href="#" onclick="if(confirm('Achtung: Löscht die Workorder in thetool, aber NICHT in RIMO!')) return deleteWorkorder(<?=$preorder->id?>, <?=$wo->id?>)" class="text-danger"><i class="far fa-times-circle"></i> Workorder löschen</a></small>
+                            <?php endif; ?>
                             <table class="table table-sm table-striped" id="preorder-detail-<?=$preorder->id?>-workorder-<?=$wo->id?>">
                                 <tr>
                                   <th>Name</th>
diff --git a/Layout/default/Preordercampaign/Form.php b/Layout/default/Preordercampaign/Form.php
index e617e91cf..47fc8777a 100644
--- a/Layout/default/Preordercampaign/Form.php
+++ b/Layout/default/Preordercampaign/Form.php
@@ -121,8 +121,9 @@
                                                 multiple="multiple" data-placeholder="Bitte auswählen ...">
                                             <option value="interest" <?= (is_array($campaign->types) && array_key_exists("interest", $campaign->types)) ? "selected='selected'" : "" ?>><?= __("interest", "preorder") ?></option>
                                             <option value="provision" <?= (is_array($campaign->types) && array_key_exists("provision", $campaign->types)) ? "selected='selected'" : "" ?>><?= __("provision", "preorder") ?></option>
-                                            <option value="order" <?= (is_array($campaign->types) && array_key_exists("order", $campaign->types)) ? "selected='selected'" : "netowner" ?>><?= __("order", "preorder") ?></option>
-                                            <option value="reorder" <?= (is_array($campaign->types) && array_key_exists("reorder", $campaign->types)) ? "selected='selected'" : "netowner" ?>><?= __("reorder", "preorder") ?></option>
+                                            <option value="order" <?= (is_array($campaign->types) && array_key_exists("order", $campaign->types)) ? "selected='selected'" : "" ?>><?= __("order", "preorder") ?></option>
+                                            <option value="reorder" <?= (is_array($campaign->types) && array_key_exists("reorder", $campaign->types)) ? "selected='selected'" : "" ?>><?= __("reorder", "preorder") ?></option>
+                                            <option value="legacytransfer" <?= (is_array($campaign->types) && array_key_exists("legacytransfer", $campaign->types)) ? "selected='selected'" : "" ?>><?= __("legacytransfer", "preorder") ?></option>
                                         </select>
                                     </div>
                                 </div>
diff --git a/application/MaintenanceNotification/MaintenanceNotification.php b/application/MaintenanceNotification/MaintenanceNotification.php
index ec7d130c2..738304980 100644
--- a/application/MaintenanceNotification/MaintenanceNotification.php
+++ b/application/MaintenanceNotification/MaintenanceNotification.php
@@ -60,19 +60,35 @@ class MaintenanceNotification extends mfBaseModel {
             $mnlog->save();
         }
 
+        $this->sent = date("U");
+        $this->save();
+
+
         // send to xinon
+        $mnlog = MaintenanceNotificationLog::getFirst(["maintenancenotification_id" => $this->id, "email" => "internal-email"]);
+        if($mnlog) {
+            // was sent already
+            return true;
+        }
+
         $to = "wartungsverteiler.team@xinon.at";
         $body .= "\n\nPLZ Liste:\n\n";
         $body .= implode("\n", $this->getProperty("plzs"));
         $email = new Emailnotification();
         $email->setSubject($subject);
-        $email->setHtmlBody($body);
+        $email->setBody($body);
         $email->setFrom($from, $from_name);
         $email->setTo($to);
         $email->setHeader("X-".ucfirst(MFAPPNAME)."-mnid", $this->id);
         $email->send();
         $this->log->info(__METHOD__.": Sending MaintenanceNotification to $to");
 
+        $mnlog = MaintenanceNotificationLog::create([
+            "maintenancenotification_id" => $this->id,
+            "email" => "internal-email",
+            "sent" => date("U"),
+        ]);
+
         return true;
     }
 
diff --git a/application/Preorder/PreorderController.php b/application/Preorder/PreorderController.php
index 4f0651449..831350fda 100644
--- a/application/Preorder/PreorderController.php
+++ b/application/Preorder/PreorderController.php
@@ -381,16 +381,15 @@ class PreorderController extends mfBaseController {
             $mode = "add";
         }
 
-        /*
-         * data colletion
-         */
-        $data = [];
-        $data['preordercampaign_id'] = $r->campaign_id;
-        $data['building_id'] = ($r->building_id) ? $r->building_id : null;
-        $data['adb_hausnummer_id'] = $r->adb_hausnummer_id;
-        $data['adb_wohneinheit_id'] = ($r->adb_wohneinheit_id) ? $r->adb_wohneinheit_id : null;
-        $data['termination_id'] = ($r->termination_id) ? $r->termination_id : null;
 
+        $data = [];
+        if($mode == "add" || !$preorder->adb_wohneinheit_id || !is_array($preorder->adb_wohneinheit->rimo_workorders) || !count($preorder->adb_wohneinheit->rimo_workorders)) {
+            $data['preordercampaign_id'] = $r->campaign_id;
+            $data['building_id'] = ($r->building_id) ? $r->building_id : null;
+            $data['adb_hausnummer_id'] = $r->adb_hausnummer_id;
+            $data['adb_wohneinheit_id'] = ($r->adb_wohneinheit_id) ? $r->adb_wohneinheit_id : null;
+            $data['termination_id'] = ($r->termination_id) ? $r->termination_id : null;
+        }
 
         $campaign = new Preordercampaign($r->campaign_id);
         if(!$campaign->id) {
@@ -423,6 +422,12 @@ class PreorderController extends mfBaseController {
             case "order":
                 $data['type'] = "order";
                 break;
+            case "reorder":
+                $data["type"] = "reorder";
+                break;
+            case "legacytransfer":
+                $data["type"] = "legacytransfer";
+                break;
         }
 
         switch($r->connection_type) {
@@ -755,7 +760,7 @@ class PreorderController extends mfBaseController {
             $this->redirect("Preorder", "Index", $qs);
         }
 
-        $preorder->deleted = date('U');
+        //$preorder->deleted = date('U');
         $preorder->deleted_by = $this->me->id;
         $preorder->status_id = 23; // 910 - Cancelled (ohne weitere Begründung)
         $preorder->save();
diff --git a/application/Preordercampaign/Preordercampaign.php b/application/Preordercampaign/Preordercampaign.php
index df2f98487..99627ec2c 100644
--- a/application/Preordercampaign/Preordercampaign.php
+++ b/application/Preordercampaign/Preordercampaign.php
@@ -36,13 +36,13 @@ class Preordercampaign extends mfBaseModel {
   }
   
   public function addTypes(Array $types) {
-    $allowd_types = ["interest","provision","order","reorder"];
+    $allowd_types = ["interest","provision","order","reorder","legacytransfer"];
     
     $new_types = [];
     
     foreach($types as $type) {
       if(!in_array($type, $allowd_types)) {
-        $this->log->debug("$type not in allowed_types");
+        $this->log->debug(__METHOD__.": $type not in allowed_types");
         continue;
       }
       $new_types[] = $type;
diff --git a/application/Preordercampaign/PreordercampaignController.php b/application/Preordercampaign/PreordercampaignController.php
index 3b16c3691..a187435bf 100644
--- a/application/Preordercampaign/PreordercampaignController.php
+++ b/application/Preordercampaign/PreordercampaignController.php
@@ -709,10 +709,10 @@ class PreordercampaignController extends mfBaseController {
       
       $preorder->setOrCreateOaid($oaid_attributes);
       
-      if($wohneinheit->oaid != $oaid->oaid) {
+      /*if($wohneinheit->oaid != $oaid->oaid) {
         $wohneinheit->oaid = $oaid->oaid;
         $wohneinheit->save();
-      }
+      }*/
       
       $assigned_oaids++;
       
@@ -747,7 +747,7 @@ class PreordercampaignController extends mfBaseController {
         $this->log->warning(__METHOD__.": workorder_export_date not null");
       }
       
-      if($preorder->type == "interest") {
+      if($preorder->type == "interest" || $preorder->type == "legacytransfer") {
         continue;
       }
       
@@ -781,57 +781,31 @@ class PreordercampaignController extends mfBaseController {
       }
       // create and assign OAID if not yet done
       $oaid->exportToRimoAndAssignFtu();
-      
+
       // create Workorder
-      $params['apiKey'] = RIMO_API_JSON_APIKEY;
-      $params["homeId"] = $wohneinheit->extref;
-      $params["firstName"] = trim($preorder->firstname);
-      $params["lastName"] = trim($preorder->lastname);
-      $params["company"] = trim($preorder->company);
-      $params["phone"] = trim($preorder->phone);
-      $params["email"] = trim($preorder->email);
-      $params["orderId"] = $preorder->ucode;
-      //$params["openAccessId"] = $preorder->oaid; // TODO: flag in campaign to include OAID or not
-      
-      $ctx_opts = [
-        'http' => [
-          'method' => 'POST',
-          'header' => 'accept: application/json'
-        ]
-      ];
-      
-      $qs = http_build_query($params);
-      //echo $qs."\n";
-      
-      $createOrderEp = RIMO_API_JSON_URL.RIMO_API_JSON_EP_CREATE_WORKORDER;
-      $post_url = $createOrderEp."?".$qs;
-      $ctx = stream_context_create($ctx_opts);
-      $this->log->debug(__METHOD__.": Creating Workorder: $post_url");
-      
-      $response = file_get_contents($post_url, false, $ctx);
-      
-      if($response === false) {
-        echo "Fehler beim Exportieren der Workorder für Preorder ".$preorder->id." ".$preorder->ucode." ".$preorder->oaid."\n";
-        $workorders_failed++;
-        continue;
-      }
-      //$preorder->workorder_export_date = date('U');
-      //$preorder->workorder_export_data = $response;
-      //$preorder->save();
-      $resp_data = json_decode($response);
-      if(!is_object($resp_data)) {
-        $this->log->error("Cannot create RimoWorkorder! Invalid Response! (Preorder code: ".$preorder->ucode.") | Response: \n$response");
-        throw new Exception("Cannot create RimoWorkorder! Invalid Response! (Preorder code: ".$preorder->ucode.")");
+      $data = [];
+      $data["firstname"] = trim($preorder->firstname);
+      $data["lastname"] = trim($preorder->lastname);
+      $data["company"] = trim($preorder->company);
+      $data["phone"] = trim($preorder->phone);
+      $data["email"] = trim($preorder->email);
+      $data["orderId"] = $preorder->ucode;
+
+      $response = Rimoapi::createWorkorder($wohneinheit->extref, $data);
+
+      if(!$response) {
+        $this->log->error("Cannot create RimoWorkorder! Invalid Response! (Preorder ucode: ".$preorder->ucode.")");
+        throw new Exception("Cannot create RimoWorkorder! Invalid Response! (Preorder ucode: ".$preorder->ucode.")");
       }
 
-      $rimo_status = $resp_data->status->userLabel;
+      $rimo_status = $response->status->userLabel;
       if(!$rimo_status) {
           $rimo_status = "";
       }
 
       $wo = RimoWorkorderModel::create([
-        "rimo_id" => $resp_data->id,
-        "rimo_name" => $resp_data->name,
+        "rimo_id" => $response->id,
+        "rimo_name" => $response->name,
         "rimo_status" => $rimo_status,
         "adb_wohneinheit_id" => $preorder->adb_wohneinheit_id,
         "create_data" => $response
@@ -903,7 +877,7 @@ class PreordercampaignController extends mfBaseController {
       
       if(!$preorder->adb_wohneinheit_id) {
         //echo "Keine Wohneinheit in Preorder (".$preorder->id.") ".$preorder->ucode." ".$preorder->oaid."\n";
-        $this->log->debug(__METHOD__.": Ignoring Preorder ".$preorder->id.": missing unit");
+        //$this->log->debug(__METHOD__.": Ignoring Preorder ".$preorder->id.": missing unit");
         $missing_units++;
         continue;
       }
@@ -959,7 +933,7 @@ class PreordercampaignController extends mfBaseController {
     
     foreach(PreorderModel::searchActive(["preordercampaign_id" => $id, "connection_count" => 1]) as $preorder) {
       if($preorder->type == "interest") {
-        $this->log->debug(__METHOD__.": Ignoring Preorder ".$preorder->id.": is interest");
+        //$this->log->debug(__METHOD__.": Ignoring Preorder ".$preorder->id.": is interest");
         continue;
       }
       
diff --git a/db/migrations/20241114131939_preorder_add_type_legacy_transfer.php b/db/migrations/20241114131939_preorder_add_type_legacy_transfer.php
new file mode 100644
index 000000000..4dcf861bc
--- /dev/null
+++ b/db/migrations/20241114131939_preorder_add_type_legacy_transfer.php
@@ -0,0 +1,31 @@
+<?php
+declare(strict_types=1);
+
+use Phinx\Migration\AbstractMigration;
+
+final class PreorderAddTypeLegacyTransfer extends AbstractMigration
+{
+    public function up(): void
+    {
+        if($this->getEnvironment() == "thetool") {
+            $table = $this->table("Preorder");
+            $table->changeColumn("type", "enum", ["values" => "interest,provision,order,reorder,legacytransfer"]);
+            $table->update();
+        }
+        
+        if($this->getEnvironment() == "addressdb") {
+          
+        }
+    }
+
+    public function down(): void
+    {
+        if($this->getEnvironment() == "thetool") {
+          
+        }
+        
+        if($this->getEnvironment() == "addressdb") {
+          
+        }
+    }
+}
diff --git a/lang/de.php b/lang/de.php
index b637fbb98..a57d0a599 100644
--- a/lang/de.php
+++ b/lang/de.php
@@ -47,6 +47,7 @@ $l['preorder.interest'] = "Interessenbekundung";
 $l['preorder.provision'] = "Vorsorgeanschluss";
 $l['preorder.order'] = "Vollanschluss";
 $l['preorder.reorder'] = "Nachbestellung";
+$l['preorder.legacytransfer'] = "Bestandsübernahme";
 
 $l['preorder.single-dwelling'] = "Einfamilienhaus";
 $l['preorder.multi-dwelling'] = "Mehrfamilienhaus";
diff --git a/lib/Rimoapi/Rimoapi.php b/lib/Rimoapi/Rimoapi.php
index 8c1d3300b..847fcc99a 100644
--- a/lib/Rimoapi/Rimoapi.php
+++ b/lib/Rimoapi/Rimoapi.php
@@ -181,6 +181,55 @@ class Rimoapi {
         return $resp_data;
     }
 
+    public static function createWorkorder($home_id, $data = []) {
+        $log = mfLoghandler::singleton();
+
+        if(!$home_id) return false;
+
+        $create_fields = [
+            "company" => "company",
+            "firstname" => "firstName",
+            "lastname" => "lastName",
+            "phone" => "phone",
+            "email" => "email",
+            "orderId" => "orderId"
+        ];
+
+        $params = [];
+        $params['apiKey'] = RIMO_API_JSON_APIKEY;
+
+        $ctx_opts = [
+            'http' => [
+                'method' => 'POST',
+                'header' => 'accept: application/json'
+            ]
+        ];
+
+        foreach($data as $field => $value) {
+            if(array_key_exists($field, $create_fields)) {
+                $params[$create_fields[$field]] = $value;
+            }
+        }
+
+        $params["homeId"] = $home_id;
+
+        $qs = http_build_query($params);
+        //echo $qs."\n";
+
+        $createOrderEp = RIMO_API_JSON_URL.RIMO_API_JSON_EP_CREATE_WORKORDER;
+        $post_url = $createOrderEp."?".$qs;
+        $ctx = stream_context_create($ctx_opts);
+        $log->debug(__METHOD__.": Creating Workorder: $post_url");
+
+        $response = file_get_contents($post_url, false, $ctx);
+
+        if($response === false) {
+            return false;
+        }
+
+        return json_decode($response);
+    }
+
     public static function updateWorkorder($rimo_id, Array $data = []) {
         $log = mfLoghandler::singleton();