I have a very large assembly drawing. It uses manually typed in balloons that reference a BOM that is a separate document. My BOM balloons keep becoming dangling. The BOM balloons do not have leaders. They are related to the view that the are in. They are grouped with other balloons to give the same result as a stacked balloon. (I think the person who initially created this drawing did not know about stacked balloons.) If I change the text in the balloon, it will turn black. I save the drawing. When I open it the next time, the balloons are green again. Any ideas why?