Civil 3D Forum Post of the Week: Why is my Dref’d surface not showing in the right place

So what would cause an XREF of a surface to be slightly different than the DREFed version? Think you know the answer?

Write it down on piece of paper and then look at the solution in this post to see if you’re right.

Kudos to Charles Roland (Rank 10, Advisor) for finding the answer.