How to build a surface from block reference?

[Anonymous]

I have a lot of cogo points with elevation. However, the cogo points was converted to  block reference within my file now. They still contain elevation data. How could I build a surface very quick from them? Thx

[tcorey]

[Joe-Bouza]

In addition to @tcorey advice check that the block insertion point is at the elevation and insertion point you expect it to be. Otherwise we may need to take another route