Quote from sprstpd:
You are considered a limited partner of that fund and they are reporting to you your share of the partnership's gains and losses on that Form K-1. You point out that line that needs to be transferred to Schedule D, but that is just capital gains from the partnership and has nothing to do with where you bought and sold the underlying ETF. You need to report that also. So it isn't double taxation - it's taxing two completely different things.
Thanks for the info.
Most of the time, Tax Package Support K-1s cannot handle short sales on K-1s. However, Partner Data Link (another big provider of K-1s) does handle short sales properly. To get Tax Package Support to handle them properly, just redate all your covers to be the same date as when you went short. You need to avoid being short overnight at any point in time, otherwise Tax Package Support's "brilliant" computer algorithm core dumps. It is possible that by being long overnight one of these K-1s that you will receive non-zero entries on the K-1 that have to be reported on your tax return (follow the enclosed instructions - i.e., the first scanned image in your post). So getting a valid K-1 is preferrable for tax correctness.
I did have longs and shorts that were held overnight. I take it if I were to "misreport" the cover dates for my shorts, it wouldn't affect the accuracy of the K-1 in any way?