I completely agree. 

If you are filing it for a PSE that appears on someone's personal return, on their federal info worksheet you also have to check off filing LL-4. It's a ways down toward the end of Part VI and appears as "electronic filing of other payments." then you open up the NY partnership worksheet and fill out all the stupid crap. 

If you are doing it for an entity that files separately then it should work if you check it off in their federal info worksheet.