I've run into an issue where I have an Assy that I need to make a drawing where it would be better to show as a Parts Only BOM and have to manually insert additional lines for few specific assy's.
The problem I ran into was that while in the Assy Model, the item would not stay excluded for some reason after saving and closing the file. I was picking parts both at the top level and parts inside of sub-assy's and checking their exclude from BOM box and everything seemed fine, as long as I did not close the file. Upon re-opening the file the item would not show as excluded anymore. I repeated this several times and the exclude box would clear after I closed the file even after repeated save and save-as.
This is in an attempt to avoid having to do a top-level only BOM and manually inserting a number of parts into the BOM. Many of these parts are in Sub-Assy's but due to client requirements for our drawing want what equates to a mixed Top-Level and Parts Only BOM.