Well it worked ok! the bridges are still there and the IPs and routes are all good.
The system was a rb230 with SRC pcmcia and Senao200mW pcmcia in a bridge for the APs and then a SR5 for the backhaul. I also had simple queues that are all there and working fine.
Now I need to see if this will work on a wrap board. Or maybe I will replace the wrap with a rb532r5.