I guessing that this is a publicly traded partnership (PTP) bought and sold thru a brokerage.
if so, you have to be careful if your importing data from brokerage 1099-B because the sale will already be there (the basis reported will be wrong)
make sure on k-1 that you check final and partner sold interest in 2018. use quickzoom to get to TT disposition worksheet. go to part II and enter info use 0 for selling price and 0 for basis. then you can go to 1099-B worksheet and enter sales and basis - 2 entries needed 1- short term 1 long -term. delete the brokers info
or you can just change the basis the broker is reporting
basically the same approach even if not a PTP
be careful if a because often part of the gain is ordinary. A PTP will provide a sales schedule for this. a non-ptp should/will report as supplemental info any ordinary gain.
