Go into your old LFS data folder (patch w or x).. Go into settings. COPY ALL of the setups into the folder called SETUPS in your NEW LFS data folder (PATCH Y)
NOW download one of the many file renaming programs and change every single setup that is now in your setups folder to the car's abreveated name.
RECAP:
Copy setups from settings folder (old LFS) and paste them into your SETUPS folder (new LFS).
Now change all the names. Example: name is now "Formula_V8_BL1.set"....IT HAS TO BE CANGED TO "F08_BL1.set".