Hi Jerome,
If you do update the connectors on those old 94102 servos they'll work fine with your R617FS receiver. My old 4 Star 60 beater has five of them connected to an R617FS, they'll work fine and last a long time
If you're comfortable with splicing on new servo wires with the proper connecters, just splice the white (signal) wire of the new connector to the outer black wire of the servo lead, then just red to red and black to black. Airtronics had the negative lead in the center of the plug, requiring a plug which absolutely could not be plugged in bassakwards, since doing so would let out the magic smoke that servos need to operate
Some folks just reverse the center black and the red wires, this will work, but the thickness of the old style Airtronics plug is greater than modern servo plugs, so they may need to be sanded down a bit and mark the signal wire (outer black wire on the original servo lead) with some nail polish, then plug it in with the signal wire closest to the little slot in the case for the standard Futaba "J" connector. All this applies to all modern receiver, even post 1997 Airtronics
Best of luck and enjoy flying in the FASST lane[8D].
Pete