My work-around is to copy the section A1a(b) and B1a(b) suspended loss carryover from the older form to the newer form. Also copy the capital account Part II, if you like. Then delete the older form. The new one is first in the forms list.
In prior years, the TXF info would combine with the remembered K-1. For 2016, unfortunately, I get a duplicate as I expect you do. The new file has the downloaded data, and the old one has the carryovers.
It would be nice if somebody has a better answer.
