Fixed issue with deleting assigmments from Employee Planner

prs.desktop/Panels/EmployeePlanner/EmployeeResourcePlanner.xaml.cs

@@ -674,9 +674,9 @@ public partial class EmployeeResourcePlanner : UserControl, IPropertiesPanel<Emp
                     to = date + period;
             }
 
-            foreach(var id in (row[binding.Path.Path] as EmployeeResourcePlannerValue)!.IDs)
+            foreach(var assignment in (row[binding.Path.Path] as EmployeeResourcePlannerValue)!.Assignments)
             {
-                items.Add(id);
+                items.Add(assignment.ID);
             }
         }