I have a collection that's displayed on 17 pages. If I go to the last page, select all items and remove them from the collection, I get the message "No releases found in collection." That's because the return url is still http://test.musicbrainz.org/collection/5fd1f2e2-9091-46df-9aff-a8e75364d9a6?page=17 and there is no page 17 anymore.