As far as I have tested you can not Import 3D Line Geometry into an Alibre Drawing to transfer into an Alibre Part File.
If you could make it a Solid Model You can Import, Iges, Step, 3dm and DWG.
Try posting this in the Alibre Forum under Using Alibre Design.
I really don't know if this can be done, but it might.
Ask these guys and good luck