mktply - 100% correct. It is a huge problem and the people that originally caused it are the brokers and advisers who did not discuss K-1s in the first place. I own 19 MLPs - don't blame me on that one as I got my mother to buy several some years ago and she gave them to me on her death. I then converted all to a trust in July which created double the number of K-1s (only for 2012 tax year thank goodness) and accordingly when I finished about 60 K-1s to enter. My wife would read me the numbers and info and I would type. We got to where it only took about 5 minutes per K-1. Was actually faster then trying to download partial data. Took almost as long to take the finished file and then delete all the K-1s from before the trust as the numbers all moved forward into the trust K-1s.
Many people should not be doing their own taxes. Problem is can you imagine the guy at H&R bock or other shop who also has no clue about K-1s trying to enter the data?