How to replace/add a FBW Cockpit on a converted plane from FSX to MSFS

Hey all,
I have a question about converted plane from FSX. I have converted an aircraft from fsx, but i want to add a working cokpit (FBW A320Nx Exp. Version). There was a converted a 318 with FBW system, but it was old and the mod basicly contained the old version of FBW, wich is not supported with the new sim version and also with the last Fbw exp. version. So my question is… How can I replace/“update” that cokpit with newest version experimental ver. of FBW? Thanks very much!
Any help will be very appretissage, thanks in advance!

Sincerely,
Filippo

I would also like to know how… WHY? …Because as you…
I have a couple of FSX planes convert to MSFS without working panels :stuck_out_tongue_winking_eye: