Final K-1 Schedule

I had an investment in my brokerage account for three years; a PTP, purchased by my broker.  Early 2021 my broker decided to do some selling and shifting of assets in my account.  The PTP company transferred all units of their stock, held in my account, to my broker who proceeded to sell all the units the next day.  

I received a final K-1,my Ending capital is 0;

Boxes 5, 6a, 8, 9a are all 0.  Box 11 = 0 code C, Box 13 =0 code H, 2 code W; Box 19 = 0 code A, and

Box 20 = 0 code A.  There are no amounts in any other boxes.

Any capital gains/losses have been reported on my 1099-B

How do I fill out the TT sales chart?   Since the account was closed out with a transfer of shares, do I use the Beginning capital account amount in section L, of K-1 as my cost basis, and

withdrawals and distributions as my selling amount?  OR 

Do I have to use the sale amount that my brokerage firm received when they sold the units?

Thank you,

TM