MLP Stock Sale with Negative Cost Basis

I am assuming TT 2020 has not fixed its ability to correctly handle a MLP stock sale.  In my case ALL the shares were sold and the K-1 shows a negative cost basis (box 6 on sales schedule provided).

 

I have seen a long chain of messages from 2019 that covers this subject. However it tends to kind of jump around and my very senior brain just cannot handle that the chain as it jumps from one scenario to another

 

Does a simple.....yet detailed step by step process  exist to get this done?    Something a very senior citizen can follow....

 

Thanks for any help you can provide

Frank