A: Yes. 3DS forces triangulation (turns quads into triangles) and strips out modern material nodes. Always keep your original extracted OBJ/FBX as a master file.
If you tell me which .3ds you mean (Autodesk 3DS model or Nintendo 3DS ROM) and what OS/tools you have, I’ll give exact commands or step-by-step instructions. convert 7z to 3ds
Total time: 3 minutes.
Error: Cannot copy file. The file is in use or corrupted. A: Yes