Apple Maps and Parked Car with 2 cars

I regularly use 2 cars. Each connected by Bluetooth to iPhone. I think phone used to put in Parked Car location for last used car but now only seems to do one and ignores the other. Is this correct and is there an easy way of swapping between cars (Bluetooth still connects to both automatically as needed). Don’t want to have to forget device each time! I don’t have CarPlay.