Copy activity with todo only shown correctly in todo after a new ToDo is added

Hello

If there is an Element with a todo (e.g. activity) and it is copied directly to another project including the ToDo list, then the Todo list remains on the old project.

This was tested and can be seen in the Demo.

What did I do:

1) I added a todo to a task in Project #10 Test1 (Activity #19)Project #10 - Test1 | Activity #19 - Géobiologue

2) I copied the activity to antoher Project # Test 4 (Activity #110 and Activity #112)
As you can see in the todo list with all projects visible they remain on Project #10
The links are copied from the todo list.
If you add now an ToDo it will change to the project where the activity is assigned.
If this added ToDo is removed again, the ToDo's switch back to the project #10



Project #10 - Test1 | Activity #110 - anoter activity 2


Project #10 - Test1 | Activity #112 - anoter activity 4