First off, is your 6700XTR a single or double backwash valve? The valve is basically the same, the micro-switch cam would be different for single or double backwash. It is pretty easy to determine. Program the valve for single backwash, if the cycles match, then you have a single backwash valve. Same goes for the double backwash, program it to DBW, if the cycles match the programming you are good to go. One of them will not match.
It sounds like you have a single backwash valve.