Thanks @JamesG1 , I looked up 2019 1040 Schedule D and line 5 is empty and line 12 says 39.
For 2020 Schedule K1:
-- Part II --
J has beginning and ending %
L has capital account numbers
N has partners share of 704c gains or loss
-- Part III --
8 has net short term capital gain
9 has net long term capital gain
13 has W other deductions value
16 has foreign transaction A, B, C, M, AA
19 has distributions A, C
Rest of the fields are all empty.
