Hello everyone,
I am developing a plugin using the SolidWorks API and encountered an issue while copying a width mate feature. The matedata.TabSelection is null, causing the mate feature creation to fail. Below is the relevant code snippet:

private void CopyWidthMate(DesignObject srcDesignObject, DesignDoc targetDoc, DocMap docMap, DesignObject targetParent)
{
IAssemblyDoc assembly = (IAssemblyDoc)targetDoc.swModel