Two answers in the same message.
FIrst: I have the same kind of problem Sose have. The answer from the Bluetooth device supplier is that BB system doesn't supported the auto detect "rebirth" of already paired devices.
I don't know if this is true or not, but BB is supposed to soon update?
I have to restart the application which drive the bluetooth device after it goes to spleep mode.
Second: You can find the RFID device on www.baracoda.com