When editing a curve made from a file using the 'Insert/Curve/CurveThroughXYZ points' command the pop-up feature editing box shows the file location previously used to create the curve, But I'm having a hard time finding the property of the feature where this value is stored, either through the  IFreePointCurveFeatureData or the Feature interface. I thought it might be Feature::GetImportedFileName, but this is not the case.

My Question is: Does anyone know how to extract this Filename? I'm writing an addin to update curves automatically as discussed in https://forum.solidworks.com/thread/59437

alternatively I'd have to store the filename in an attribute, but that would reduce the flexibility of the add-in.

Thank you for your help

Jeroen