It depends what is included on Box 14 and Box 13. There are tax-exempt elements reported in Box 14. However, per TurboTax Employee Tax Expert KarenM, a common reason these two values would differ would be from capital gain distributions, if assets were sold or if it was a final trust return.
See Schedule K-1 (Form 1041) page 2 and the 2019 Schedule K-1 (Form 1041) Instructions
I will pass along your suggestion to enable imports for Schedules K-1!
[Edited 4/10/2020 | 2:37 PM PST]
@ligoods
