@nexchap: Taxpackagesupport for ETP confirmed for me that SUN, SXL and PTXP were all absorbed into ETP in 2017 and 2018, so that question is answered. And I think I'm simply going to make things right in my 2018 return. If I need to amend, as there is no tax consequence, I believe it would amount to a statement detailing why I've added back a K-1 that I previously deleted from my return. Thanks again for your help!
