When converting an OBJ file with balsam, the generated .mesh file does not preserve the original filename of the input asset. Instead of using the OBJ’s base name, balsam saves the output as defaultobject_mesh.mesh.

This behavior does not match the documented usage (https://doc.qt.io/qt-6/qtquick3d-tool-balsam.html).

The issue is observed in all versions of Qt 6.8.X.

Attached a minimal example that demonstrates the issue. The example creates an OBJ file named triangle.obj in the current directory and then converts it to .mesh format using the balsam tool. However, the resulting .mesh file does not preserve the source filename (expected: triangle.mesh), and is instead saved under a different name.