.obj materials stopped being applied

Hello Bambu Lab Community

I stumbled over a very frustrating bug, as it seems. Or I don’t see my mistake at all.

For quite some time now, it is possible to use materials on .obj models to assign filaments according to the textures applied.
This is a groundbreaking feature for me. Great job!

But it stopped working out of nowhere.

I follow up with screenshots that support my case.

1. The working file, 1:1 same group structure from skp, obj file, same material, everything is exactly the same.

2. As you see, the obj file has the textures applied. Pic 1 is shown like this as well, 1:1

3. I import the obj file…

4. …apply the correct filaments which are loaded and worked 5 mins before on picture 1

5. …yea, scaling stuff, don’t ask, 1:1 like with picture 1

6. Bambu slicer ignoring everything i did, creating random non existing TPU filament in my AMS Lite, and applying at least the green color right, but on everything?!

I couldn’t fix it with anything I did. The old obj file (pic 1) still imports fine, but it is modeled in the exact same way:

Sketchup:
GROUP
-GROUP(green volume)
-GROUP(blue volume
-GROUP(green frames)

And that’s it.

I wish I could add my project files, but it’s work related and that is not possible. I don’t have the time right now to copy some parts and hope that the same bug is replicable, sorry.

I could not find this problem using the search engine here. If I oversaw something, I’d be happy if you just link me further.

Thanks in advance and have a great day
P