Uneditable surface anomalies created when opening V5 in V6 wip

I haven’t figured out how to edit or delete these “Antenna” from the drawing. they only appear in V 6 wip. not when opened as a V5 model. cant seem to edit or delete in V6.

Hi Mike - can you send the object in a Rhino file to tech@mcneel.com?

thanks,

-Pascal