I have been working on this drawing for a long time and today the BOM started doing weird things. Previously, I had a parts only BOM for the full assembly on sheet 1 and a parts only BOM with certain parts hidden so it only displayed parts from a certain vendor (but still showed all the parts in the drawing view) on other sheets. I was updating one of the vendor BOMs today and now all of the BOMs display the same 6 parts. I can't get any of them to display all parts again (I was able to before). I've tried everything I can think of. When I delete the BOM and put it back, the same 6 parts are displayed, even when I create a new drawing at start from scratch.
The only change since the last time I did this is we switched from Solidworks 2007 x32 bit to 2010 x64 bit.
Does anyone know what could be wrong?