To recreate: 1: add an item to a rotating collection 2: delete that item (either via batch delete or via single item delete) 3: confirm your rotating collection no longer shows in the staff interface (rotating_collections/addItems.pl) 4: select * from collections_tracking for your collection, confirm your item is still listed there 5: attempt to transfer your rotating collection, get a big angry error: Can't locate object method "rethrow" via package "Can't call method "request_transfer" on an undefined value at /kohadevbox/koha/C4/RotatingCollections.pm line 451. " (perhaps you forgot to load "Can't call method "request_transfer" on an undefined value at /kohadevbox/koha/C4/RotatingCollections.pm line 451. "?) at /kohadevbox/koha/C4/RotatingCollections.pm line 504