I think I follow the logic.  I enter the $64k on K-1 line 1. 

I would also then enter a PYA loss on Schedule E page 2, correct?  This zeroes out the income for the current year leaving $122k carried forward.

$187k prior year carryforward loss minus $64k income in 2020 = $122k carryforward to 2021.  

Let me know if this makes sense.