Hello John,
Your problem suggests to me that you haven't 'protected' the footswitch settings.
To do this press the CUSTOMISE button (bottom right of keyboard. It will take you to the Customise Menu where there are several options listed, including DATA PROTECTION. Press this button which will take you to the DATA PROTECTION page where there are further options.
My own KN7 has FOOT CONTROLLER and PANEL MEMORY EXP. FILTER both set to 'ON' and the rest are all set to 'OFF' but I think you will probably need the TOTAL EQUALIZER set to 'ON'
I may have misunderstood your problem, but take a look at this facility, it may be of help to you anyway.
Good luck!
Audrey