I need a button for Manage Imports. When you import many dwgs as underlay, you don't get a list with comprehensive details. If somebody else did those imports you just can't find out any details about it: what Workset are they on, what views are they linked to. They may be turned off in a view by using the V/G options and you may not be aware on that.
You can only delete them manually. There is no list to select from and edit/scale/delete multiple imports at once.