K-1 and PTP

If you enter each of the sub PTP entities of a parent partner, where do you show the sale?  Is it on the sub-entity that had the same FEIN as the parent partner?  For the passive losses of the sub-entities to be booked for the close of a partner, you must show “disposed of all through sale.”  Do you show no sales and no cost for each of the activities that have different FEINs from the parent partner? How do you carry sub-entity losses from year to year that do not show on the current year K-1 anymore?