Right about now I'd be flipping my ET purchased on 9/17, but I've decided to transfer the new units to my main account, where I have a boatload of units, to keep them.
By holding on the units purchased I reduce my cost basis in the existing unit account slightly and do not book a profit this year.
Because of the accounting for partnership investments, the new cost basis is averaged in with all of my other lots and a sale in that account is not applied to individual lots - it is applied to a melded average of all shares.
I continue to be very positive on this name and don't mind holding it and getting well paid by distributions while I do nothing.