Deleted group stays in upload

When a group is deleted, it's not removed from uploads. The group members lose the access to the upload as expected but the upload members dialog is broken.

Thanks to @g-michaelgoette for pointing this out.

API

Even if the table is resilient to missing groups, the API is not.

The API itself does not have a problem with missing groups, it will just ignore it in the response. But the GUI must handle missing groups in the response.

So you have to remove the missing groups from the table before submitting, which also removes them from the upload in the database. Otherwise you cannot make changes to the upload members. This may be ok.