IRS has changed some aspects of form K-1.  In 2017, code 16M was "Total foreign taxes accrued", in 2018 code 16M is now "Deductions allocated and apportioned at partnership level to foreign source income --Passive category".  The instructions in online help (link below) are two years old and need to be updated.

https://accountants-community.intuit.com/articles/1860048-partnership-k-1-input-box-16

Similarly, K-1 box 20AH for DPAD is no longer used by IRS yet ProConnect Online itself has not reflected this change.