Each month since retiring from Memorial Hospital last year, Alana would receive about $700 from her pension account, automatically and on time. Then, in October, without notice, the payment stopped. It was the same month Memorial joined the University of Colorado Health system under a voter-approved lease, a transaction that has put a huge question mark over the future of Alana's payments -- and about $53,000 more that is distributed among 14 other Memorial retirees each month. The payments are not part of the regular pension disbursement from the Public Employees Retirement Association to Memorial's retirees. They're in a category all their own, and it's not clear who is responsible for continuing the payments.