After removing accounts, activities stay in the database and they block removal od securities: <img width="927" height="201" alt="Image" src="https://github.com/user-attachments/assets/2cb6b37c-eb95-4af6-af9f-99381d1e02e0" /> <img width="1024" height="572" alt="Image" src="https://github.com/user-attachments/assets/f92802aa-4664-49a5-a32e-eec4ebdcbdd2" /> Perhaps foreign key with cascade delete is needed there? Tested on 2.1.0