May be this will help.
I had Prepa3D v.14.with installed FSUIPC and LINDA in Modules folder. Just copied the folder to Prepar3Dv2 and after installed the new FSUIPC 4.f.
If LINDA runs with Prepar3Dv2 you need to change the path to LINDA in FSUIPC4.ini.
[Programs]
RunIf1=R:\Prepar3Dv2\Modules\linda.exe