Reply to Faders missing in Traktor but works when mapped to other settings.

Im using a Numark mixtrack pro running Traktor Pro 2. I was creating a mapping to use both my mix track pro and launch pad with traktor and some how my crossfader, left, and right volume faders have stopped working. The peak indicator and cross fader bar is still there and are checked in my preferences but no actual fader is present on them. Cross faders work when mapped to controls other than controlling deck volume. I have tried multiple mappings i have downloaded and its the same on all of them. What should i dooo???