Merge branch '1069161_FixOfferItemDelete' into '2020.2'

[Projekt: Entwicklung - xRM][TicketNr.: 1069161][Offeritem 2. Position nach delete fehlerhaft]

See merge request xrm/basic!535

process/OfferOrder_lib/process.js

@@ -390,7 +390,7 @@ ItemUtils.prototype.getNextItemPosition = function(assignedTo, tree, ids) {
         }
     } else {
         if (ids.length > 0) {
-            maxPos[0] = this.ItemTree[ids[ids.length-1]].pos.split(".")[0];
+            maxPos[0] = tree[ids[ids.length-1]].pos.split(".")[0];
         }    
     }
     maxPos[maxPos.length-1] = (Number(maxPos[maxPos.length-1]) + 1).toString();