If "Options - Module - complete Maximum OAS" is checked off, your T4A OAS will show $6878. Why won't the program allow the CRA transfer to override it?
If the client is over 65, the program automatically enters the maximum OAS pension. But many of my clients have a lessor amount and the CRA data transfer will not override it. I've failed to catch this on some returns with resulting mistakes being filed. I wrote this to help others find out where to shut off the automatic maximum OAS insertion.