Set "Field not found in current track" log to debug instead of warn
Set "Field not found in current track" log to debug instead of warn

* all our code is use_field if track.field(FIELD) so we don't
   need a log to tell us it wasn't in the track
mobile-devices/ragent_bay,mobile-devices/ragent_bay,mobile-devices/ragent_bay,mobile-devices/ragent_bay