Is part of not working

[casitasrd]

I have a parent table that has a reference to a child table containing just pictures. When I delete the parent record, I expect for the child record associated with the parent record to be deleted as well. any thoughts?

Things to know:

1. The child table is the only is part of reference child table.
2. There are 2 more ref to tables that are not is part of.
3. The parent table is call "Real Estate" and the child table is call "Fotos".
4. The child table has multiple physical columns for pictures. 5 in total.
5. The parent table has many virtual columns.
6. The child table only has one virtual column which is the automatic reference row list to the parent table.