Delete renamed documents

I published a visual filter in some of my groups on Faithlife, then I changed the filter a bit and updated its name accordingly. The new name of that very same filter will now be synced to the groups where it formerly was published, but the old filter will remain as a copy.

Now there seems to be no way of deleting that old copy and it might stay forever, messing up the documents in the group.

Is there any way to remove these old documents from the groups?

So:

- old document is removed from my account- old document is removed from my 'Manage your documents' in Faithlife
- old document is NOT removed from the groups where a copy is published
- if I delete an old document BEFORE unpublishing it, I have no option anymore to delete / unpublish the old document and nobody else.

Any ideas to solve this?