Froze 2020 RMD from reg IRA at Tiaa. Tiaa fund was paying 3% guaranteed. That fund has been closed for some time. The open fund pays only 1%. According to Tiaa, If I roll back my 2020 Rmd $ I cannot access the 3% fund they came from. Rather, only the open 1% fund is available. Has anyone come across this issue Prohibiting roll backs to (original RMD source) closed investment vehicles?