Hello Solidworks Community,

I am having an issue with a boundary surface.  It is 1-directional, and extends from the edge of a solid(3D curve) to the edge of a surface(straight line), with tangency conditions for both.  The Surface apears to generate fine, and looks the way I intended it.

However, Only one side of the surface is selectable, I cannot select the middle and other side via mouseclick.  when I click the feature in the design tree it selects everything.   Tools>Check yields two "invalid surface" errors and points to the boundary along the edge of the solid above the sections that are "unselectable"

I need to eventually knit, trim. and thicken these surfaces, and cannot do any of these actions currently.  Any thoughts?  I'm brand new to surfacing and teaching myself,  I may be missing something basic here. 

Thanks,

Trevor

SW2011