Some years back, I had a new client come to me; and in reviewing his prior years returns, I had him explain a Schedule E, page 2, Unreimbursed Partnership Expense that appeared on one year and not others, with no MMLLC line, just the UPE line. He'd had the situation above and called the IRS (back when the IRS answered phone calls). They told him to use Schedule E, page 2, as if the MMLLC was still open, as he would for any UPE. So, he'd done that for that one year the partners personally paid an expense after they closed the LLC. Now, with K-1 matching, that might generate an IRS letter. I haven't had an occasion to look into it. Keep researching to see if you can use that method for your client.