Thanks Tom,
We do use a lot of Reps here, might be the problem.
Still doesn't make sense that I saved a backup of the entire assembly to my hard drive out of windchill. Cleared memory and then reopened from my hard drive, saved as .PVZ and incomplete parts in IsoDraw.??? If all parts were backed up to hard drive that eliminates Windchill as the problem child. How was this problem with IsoDraw not found out earlier? Is this going to be a constant problem down the road?