Problems Importing an SLDPRT file into Fusion 360

I am trying to import a plastic clip I found on GrabCAD into Fusion 360 It's a solid works part
and imports into the usual parts pane on the left hand side of the Fusion screen with all my other project parts.

However, whereas any of the parts I have created in Fusion can be "Right Clicked" and dropped directly into my current project, when I right click on the clip a different window opens with no option to bring it into the current project. Nor can I use the Insert command in Fusion to bring the part into a project.

Any help would be appreciated.