[MS 2023 C#] path.GetHeadElement().DgnModel.IsDgnAttachment always false?

I'm using path.GetHeadElement() to identify elements in a DgnElementSetTool.

element.DgnModel.IsDgnAttachment is false eventough the element identified is a reference. Why is that?

I need to get a reference to the DgnModel of the reference that the element comes from to be able to transform the coordinate to the active file.

/Krister