AutoCAD Civil 3D

[#1]

all of a sudden whenever I run audit on my corridor file the suface definition becomes a snapshot. Is this normal behavior?

I'm at the end of a long design and could do without the drama

To add to the drama, the corridor surface will not paste into an empty surface. Why?

[#2]

Yes this seems to be normal behaviour.  I've had several projects where my surface files built from Lidar points suddenly became snapshots because someone ran an audit on the drawing and then saved it.  Most annoying...

[#3]

Thanks for commiserating.