The R40s and R44s were never assigned to 207 in recent history. The R38 is the only fleet assigned there to be retired recently. R32s were retired out of Jamaica, with a few retired from Coney Island, Pitkin, and 207. The R40Ss were retired from Pitkin and Coney Island. The R40Ms were retired from Pitkin and Jamaica (perhaps a few were pulled when assigned to Coney Island, but I do not recall such occurring), and the R42s were directly retired from damn near everywhere, with the exception of concourse. The R44s were entirely based out of Pitkin.
207th street shop which provides the A/C with 222 R32s has absolutely NOTHING to do with the retirement of subway cars. IINM it isn't even the actual location cars were stripped prior to reefing. I believe all that was done by the overhaul shop, but I could be mistaken as I have not been there in many years.