Thanks!   Another approach I saw was to show  the primary name & tax id but enter the supplemental PTP in the name as well...for example    TP ((USAC   (nn-nnnnn)). Not sure how the IRS ties into these... I do realize the issue is identifying and keeping each supplemental PTP info separate for passive activity purposes, etc.   Ugh.    I also found that for one, when I mark it FInal k-1 (merging) an error message appears.   Am just going to override that when e-filing since no actual disposition, etc.)     Ugh again.