I use the additional k1 worksheet that appears when I check the Final box on the k1.

HOPEFULLY, you have all the data you need on the k1.

If the PTP was sold through a brokerage, you also have the sales proceeds on the 1099B, but then it is entered twice(and incorrectly from the 1099B). Then I enter a fake reversal on Sch D so its gain or loss is not double-counted.