@Edoardo thanks for the suggestion but for our mono it is a bit hard as the solidworks file wasnt created by me. It is was made 3 years ago by old team memebers and i would have to completely re-create it, which i might have to do. However i have done some more tests which just bring up more questions.
First i tried to do just a simple part of the car to see if it would be recognized again as a solid body
this is just the suspension system uploaded as an 3D object file - no name changes.
The exact same result happened when i uploaded a TXT file with a name change in the suspension system. notice the name change in the selection tree
based on this i uploaded just the monocoque file. Back to no solid body
Now i tried merging both these files to see what happens … both now change to no solid body
And lastly I tried merging the suspension system with a random part, this case a tire. Both changed name, both TXT file upload. now its back to solid body.
Now obviously this leads me to believe that the MONO file is to blame. However the mono has already been accepted with solid bodies before, which i also showed in prevoius posts. The solidworks file hasnt changed. Here it is.
This was from the 3D object vs TXT test. I really dont understand why it seems to choose when to accept the file as a solid body or not. Any help would be appreciated.