Exterior and interior LODx0 not showing in Cockpit and showcase view respectively

In the process of building my first airplane, a glider to be more specific, and everything was going well up to about two weeks ago.
The problem I’m currently experiencing is when I’m in cockpit view I can no longer see my exterior_LODx0 and when in showcase view I can no longer see my interior_LODx0.
The weird thing is the interior_LODx0 while in showcase view will appear if I position myself inside the fuselage right behind and below the actual physical cockpit.
I have triple checked my model.cfg and my airplane_interior_LODx0.xml and airplane_exterior_LODx0.xml, everything checks, but like I said everything was working as expected couple weeks ago.
Hope I’m clear with my explanations.
Thanks for any insights on my issue!

Are there any console messages from the glTF loader, vfs, and the like? I’m assuming you’re using the sim attachment format based on your description.

So I found out what the problem was:
I was modifying, for test purposes, the model.cfg using the Model.options UI in the SimObject Editor. By doing this it updates the model.cfg file by replacing the string values True and False by numerical values 1 and 0 respectively, which for some odd reasons, breaks everything. So by editing manually the model.cfg file and reverting back to all 4 string values it fixes everything!!! GO FIGURE