Yessir! copied the new panel and updated radio and AP sections in the CFG.
Been trying again today, went manually on course and altitude, then by switching every thing off in the AP including the master, then setting the AP for NAV/GPS and the selector in GPS and THEN switch on the master for the AP it did hold course for a leg, on reaching the next WP, the Aircraft flinched and never recover the signal again. This happened flying the S2A-CDF in FS9.
I'm starting to wonder if there is something going with FS9 itself (fairly old installation) but everything seems to be OK with the rest of AC, funny puzzle.
Oh well, I'll keep trying to isolate the problem.