If an error occurs when move a "list" of items to another category it doesn't get the relevant data the next time the CMS is displayed. Presumably this is because catnr is replaced catnr[0], catnr[1], etc in the (hidden) CMS fields

For some reason the "content_manager" plugin has the same values as the "content" plugin (check junerules.com)

Move/delete all doesn't workError shown (catnr must be at least 1)

When editing a config, clicking another config fails... prolly more