ID 377236 - Exporting Curves in Modo creates undesired mesh polys or is missing after importing, depending on the file type.

Problem summary
Exporting Curves in Modo creates undesired mesh polys or is missing after importing.

This issue does not occur when exporting with the luxology (.lxo) file format.

Customer reported version
modo.12.2v1

Customer reported platform
windows10

Steps to reproduce:
1) From Modo, create a Curve.

2) Export as .OBJ or .3DM file.

3) Import the exported object from step 2.

4) Observe any polys or missing mesh.

Reproduced by Support in:
Modo 12.2v1 - Windows 10

Modo 12.1v2 - Windows 10

Modo 12.0v1 - Windows 10

Modo 11.2v3 - Windows 10

Modo 11.1v1 - Windows 10

Modo 11.0v3 - Windows 10

Modo 10.2v4 - Windows 10

Earliest version tested
Modo 10.2v4 - This issue appears to be in all versions of the product

Expected behavior:
The curves should be imported as it appeared when exporting, without additional poly information.

Actual behavior:
The exported curves appears with extra polygon information or is missing entirely upon import, depending on the exported file type.