CFS2 button assignments being lost

[jdoehlert]

I hope no one is offended by my attempts on several forums to find help with my
small puzzle...and

I know this is not technically the correct forum, but I also know many here are
also very familiar with other sims...

and in fact my interest in CFS2 came from comments I saw HERE on the very good
flight dynamics, and the fun that could be had in one on one aerobatic
multiplayer flights in CFS2...

so, if anyone can help;

I know I am missing something dreadfully obvious;

I have used custom assignments on my joystick nearly from the start; recently I
wanted to change some of those assignments, and thought I was going through the
same procedure. The changes are accepted ok, but the next time I start up the
program they have disappeared, and reverted to the prior (custom) settings.
Again, I know I must be missing something obvious, but I just don't see it...

thanks in advance

Jamie