Undo action when field is deleted

[mtb0x1]

The undo action seems unreliable. I was able to reproduce the issue below :

Steps :

1. Create 2 tables (table with ID int, table2 with ID int)
2. Create a relation between table.ID and table2.ID
3. Save
4. Remove filed table2.ID
5. Save
6. Undo

Result : table2.ID is restored, but it's relationship with table.ID is lost.

Expected result : table2.ID is restored with it's relationship(s).