Have the same issue. 3 member LLC w K-1s... flowing form 1065, sale of real estate on installment sale. It looks like the LLC can fill out a 6252 for the installment sale, which flows to a D which flows to the 1065, second page line 8 or 9a (short term or long term). Then through the k-1s, each partner gets ⅓ of income.
