create a work
add it to anon collection and to another collection
remove anon collection, add work to a visible collection in the same edit
work is in visible collection, but anon
Created an anonymous collection A.
Created basic collections B, C.
Posted without preview a new work, specifying collections: B, A. The work appeared anonymous.
Edited the work to have collections B, C (removing A).
The work became not anonymous, and in collections B, C.
Confirmed with unrevealed/anon, just for fun. Also worked fine!