I spent over an hour on this, then an hour with support. The support process was pretty terrible, and in the end gave me the same workaround I came up with on my own: Do NOT check the "Final K-1" box even though it IS a Final K-1. The IRS will get the Final K-1 from the Partnership, so you SHOULD be OK. Probably the program will then import the K-1 the following year, but you can just delete it. Probably you won't run into any problems, and your taxes owed will probably not be affected (my understanding is that the Final in some cases forces some resolution of carried over losses, etc... but probably the K-1 as prepared will be accurate). BUT, there's no question this is a horrible bug in the software. The worst thing was that despite this being an obvious and horrible BUG, it was obvious that the support person had no intention whatsoever of reporting it so that it might be fixed some day. For the 1 in 1,000 people in the future who suffer lost time and grief due to this bug: Congratulations on finding this message! It probably won't help, but at the very least you can stop searching for a solution and for God's sake don't try to report it to Intuit - you'll be stonewalled for certain, and you'll never get those precious hours of your life back.
