Fix not all checklist items being imported/cloned

models/wekanCreator.js

@@ -716,6 +716,10 @@ export class WekanCreator {
 
   createChecklistItems(wekanChecklistItems) {
     wekanChecklistItems.forEach((checklistitem, checklistitemIndex) => {
+      //Check if the checklist for this item (still) exists
+      //If a checklist was deleted, but items remain, the import would error out here
+      //Leading to no further checklist items being imported
+      if (this.checklists[checklistitem.checklistId]) {
         // Create the checklistItem
         const checklistItemTocreate = {
           title: checklistitem.title,
@@ -724,10 +728,12 @@ export class WekanCreator {
           sort: checklistitem.sort ? checklistitem.sort : checklistitemIndex,
           isFinished: checklistitem.isFinished,
         };
+
         const checklistItemId = ChecklistItems.direct.insert(
           checklistItemTocreate,
         );
         this.checklistItems[checklistitem._id] = checklistItemId;
+      }
     });
   }