if you delete a resource in inactive then the system creates a "delete activity". activating this activity will take care of getting rid of the content from the active space.
Yes, I know. But as I wrote above all the delete activities were activated except those with .dcref files. On the second iteration I was able to delete them (dcrefs) as well, and now TopLevelDCs folder is empty.
What can I do if I don't see anything in inactive workspace? It has already gone.