diff --git a/scripts/adb-rimo-import/importer/citycom.php b/scripts/adb-rimo-import/importer/citycom.php
index 577c98184..f1ce5ee62 100644
--- a/scripts/adb-rimo-import/importer/citycom.php
+++ b/scripts/adb-rimo-import/importer/citycom.php
@@ -141,7 +141,6 @@ class CitycomImporter {
                     if($unit->status->code < 300) {
                         $unit->status_id = $status_300->id;
                         $unit->save();
-
                     }
 
                     $status_code_241 = \ADBStatusModel::getFirst(["code" => 241]);
@@ -151,6 +150,14 @@ class CitycomImporter {
                     }
                 }
 
+                if($unit->oaid) {
+                    $preorder = \PreorderModel::getFirst(["adb_wohneinheit_id" => $unit->id]);
+                    if($preorder && !$preorder->oaid) {
+                        $preorder->oaid = $unit->oaid;
+                        $preorder->save(["no_aftersave" => true]);
+                    }
+                }
+
                 \mfValuecache::singleton()->set("adbhausnummer-save-nesting-level-".$hausnummer->id, 0);
                 \mfValuecache::singleton()->set("adbwohneinheit-save-nesting-level-".$unit->id, 0);