Hi, this definitely works, as autogen and airport objects are stored in a different place, with different priorities.
Note that currently, only 1 airport or of 6 has 3D buildings in x-plane default install.
About 6 new airports are added every day by volunteer artists. This is all centralised on the scenery gateway :
https://gateway.x-plane.com
Finally, this forum is mainly for x-plane default install. You will receive more help on x-plane.org forum, for example.
Regards,
Guillaume