diff --git a/Layout/default/Admin/MassProductchange/Index.php b/Layout/default/Admin/MassProductchange/Index.php
new file mode 100644
index 000000000..50c26009d
--- /dev/null
+++ b/Layout/default/Admin/MassProductchange/Index.php
@@ -0,0 +1,107 @@
+<?php include(realpath(dirname(__FILE__)."/../../../$mfLayoutPackage")."/header.php"); ?>
+
+    <!-- start page title -->
+    <div class="row">
+        <div class="col-12">
+            <div class="page-title-box">
+                <div class="page-title-right">
+                    <ol class="breadcrumb m-0">
+                        <li class="breadcrumb-item"><a href="<?=self::getUrl("Dashboard")?>"><?=MFAPPNAME_SLUG?></a></li>
+                        <li class="breadcrumb-item"><a href="<?=self::getUrl("Admin")?>">Admin</a></li>
+                        <li class="breadcrumb-item active">RTR Reporting</li>
+                    </ol>
+                </div>
+                <h4 class="page-title">Massenproduktwechsel</h4>
+            </div>
+        </div>
+    </div>
+    <!-- end page title -->
+
+    <div class="row">
+        <div class="col-12 col-xl-10">
+            <h3>Produktwechsel erstellen</h3>
+            <div class="card">
+                <div class="card-body">
+
+                    <div class="row">
+                        <div class="col-6">
+
+                            <div class="alert alert-purple">
+                                Sucht alle aktiven Contracts mit <strong>bisherigem Produkt</strong> und erstellt jeweils einen <strong>Produktwechsel</strong>.
+                            </div>
+
+                            <form method="post" action="<?=self::getUrl("Admin", "massProductchange", ["do" => "create"])?>">
+                                <div class="form-group">
+                                    <label for="old_product_id">Bisheriges Produkt</label>
+                                    <select name="old_product_id" class="form-control select2">
+                                        <?php foreach(ProductModel::getAll() as $product): ?>
+                                            <option value="<?=$product->id?>"><?=$product->name?></option>
+                                        <?php endforeach; ?>
+                                    </select>
+                                </div>
+
+                                <div class="form-group">
+                                    <label for="new_product_id">Neues Produkt</label>
+                                    <select name="new_product_id" class="form-control select2">
+                                        <?php foreach(ProductModel::getAll() as $product): ?>
+                                            <option value="<?=$product->id?>"><?=$product->name?></option>
+                                        <?php endforeach; ?>
+                                    </select>
+                                </div>
+
+                                <div class="form-group">
+                                    <label for="price_type">Neuer Preis</label>
+                                    <select name="price_type" id="price_type" class="form-control">
+                                        <option value="keep">Bisherigen Preis beibehalten</option>
+                                        <option value="from_new_product">Preis vom neuen Produkt übernehmen</option>
+                                        <option value="fixed">Fixen Preis definieren</option>
+                                    </select>
+                                </div>
+
+                                <div class="form-group hidden" id="fix_price_container">
+                                    <label for="fix_price">Fixpreis</label>
+                                    <input type="text" name="fix_price" class="form-control" placeholder="Neuer Preis" value="">
+                                </div>
+
+                                <div class="form-group">
+                                    <label for="linked_contracts_action">Verknüpfte Contracts</label>
+                                    <select name="linked_contracts_action" id="linked_contracts_action" class="form-control">
+                                        <option value="keep">übernehmen</option>
+                                        <option value="cancel">Kündigen</option>
+                                    </select>
+                                </div>
+
+                                <div class="form-group">
+                                    <label for="change_date">Produktwechsel durchführen am</label>
+                                    <input type="text" name="change_date" class="form-control" value="">
+                                </div>
+
+                                <button type="submit" name="preview" value="1" class="btn btn-primary">Vorschau</button>
+                            </form>
+                        </div>
+                    </div>
+
+                </div>
+            </div>
+        </div>
+
+    </div>
+
+
+<script>
+    $(document).ready(function() {
+        $(".select2").select2({
+            placeholder: "Bisheriges Produkt auswählen"
+        });
+
+        $("#price_type").change(function() {
+            if($(this).val() == "fixed") {
+                $("#fix_price_container").show();
+            } else {
+                $("#fix_price_container").hide();
+            }
+        });
+    });
+</script>
+
+<?php include(realpath(dirname(__FILE__)."/../../../$mfLayoutPackage")."/footer.php"); ?>
\ No newline at end of file
diff --git a/application/Admin/functions/MassProductchange.php b/application/Admin/functions/MassProductchange.php
new file mode 100644
index 000000000..47e39f09a
--- /dev/null
+++ b/application/Admin/functions/MassProductchange.php
@@ -0,0 +1,75 @@
+<?php
+
+class Admin_MassProductchange {
+    private $request;
+    private $db;
+    private $log;
+    private $flash = [];
+
+
+    public function __construct($request = false) {
+        $this->request = $request;
+        $this->db = FronkDB::singleton();
+        $this->log = mfLoghandler::singleton();
+
+    }
+
+    public function runRequest() {
+        $action = $this->request->do;
+        if(!$action) {
+            return $this->indexAction();
+        } else {
+            $method = $action."Action";
+            if(method_exists($this, $method)) {
+                return $this->$method();
+            } else {
+                throw new Exception("Method not found", "404");
+            }
+        }
+    }
+
+    public function indexAction() {
+
+        return [
+            "template" => "Admin/MassProductchange/Index",
+            "redirect" => "",
+            "templateVars" => []
+        ];
+    }
+
+    public function createAction() {
+        $this->log->debug("Create action called");
+        $this->log->debug($this->request->getPost());
+
+        $old_product_id = $this->request->getPost("old_product_id");
+        $new_product_id = $this->request->getPost("new_product_id");
+
+        if(!$old_product_id || !$new_product_id) {
+            $this->flash[] = "Beide Produkte werden benötigt.";
+            return [
+                "template" => "Admin/MassProductchange/Index",
+                "redirect" => "",
+                "templateVars" => []
+            ];
+        }
+
+        $contracts = ContractModel::searchActive(["product_id" => $old_product_id]);
+
+
+
+        if($this->request->preview) {
+            return [
+                "template" => "Admin/MassProductchange/Index",
+                "redirect" => "",
+                "templateVars" => ["contracts" => $contracts]
+            ];
+        }
+
+        return [
+            "template" => "Admin/MassProductchange/Index",
+            "redirect" => "",
+            "templateVars" => []
+        ];
+    }
+
+}
\ No newline at end of file
diff --git a/db/migrations/20250314130000_woker_add_active.php b/db/migrations/20250314130000_woker_add_active.php
index b653fa26f..c72b6aea4 100644
--- a/db/migrations/20250314130000_woker_add_active.php
+++ b/db/migrations/20250314130000_woker_add_active.php
@@ -7,7 +7,7 @@ final class WokerAddActive extends AbstractMigration {
         if ($this->getEnvironment() == "thetool") {
             $workerTable = $this->table("Worker");
             $workerTable
-                ->addColumn("active", "integer", ['default' => 1])
+                ->addColumn("active", "integer", ['default' => 1, "after" => "id"])
                 ->save();
         }
     }
diff --git a/scripts/adb-rimo-import/rimo-import.php b/scripts/adb-rimo-import/rimo-import.php
index 2b77ffa3f..66f94e1f3 100755
--- a/scripts/adb-rimo-import/rimo-import.php
+++ b/scripts/adb-rimo-import/rimo-import.php
@@ -893,5 +893,9 @@ function getServiceDnValues($dn)
         }
     }
 
+    if(!array_key_exists("Shelf", $fields) && array_key_exists("SpliceBox", $fields)) {
+        $fields['Shelf'] = $fields['SpliceBox'];
+    }
+
     return $fields;
 }