Interesting. I did find this in the instructions:

"If a partner's interest commences after the beginning of the partnership's tax year, enter in the Beginning column the percentages that existed for the partner immediately after admission. If a partner's interest terminates before the end of the partnership's tax year, enter in the Ending column the percentages that existed immediately before termination."

Maybe its just always been habit, but I've always shown ownership as zero for a final partnership / K-1. The software I used before Lacerte easily let us show it this way. I even went back and looked at a bunch of final PTP K-1s I have on file, and they all show zero ending ownership.

I am not going to go crazy trying to adjust this.

srjcpa, I appreciate you leading me to the instructions.