When i add a via from a ground pad to the plane trace isnt visable
Are you adding via to a ground pad of SMT decal on different layer than one with copper plane (copper connected to) GND? Which part of the trace is not visible, whole trace disappears?
When you add via to a net which has copper plane on different layer it is automatically connected to this net (copper plane) so connection disappears and gray "X" (cross) is visible on the via. Trace is than visible only on the layer where it connects the pad and the via, it is not visible "under" the copper plane (where it is poured).
Even from that image I do not understand how you made the trace to disappear. Which via you placed, which trace disappeared?
I guess image you sent is after placing the via.
Check the "View Details" setting for your ground net under "View Nets".
Retrieving data ...