Create Offset for Survey Import?

[hannac25]

I'm currently working on a project that is outside of our local coordinate system. The original drawing was created in 2014 by my predecessor, and when he imported the existing ground survey he used our LCS and just ignored that it placed the entire project work space in very much the wrong location.
Fast forward to now and this project is back on, I was hoping to find a quick and easy way to recreate his base drawing in the right location so the aerial photo and street basemapping lines up.
I can select everything and move it, but then I have to explode all the survey figures (which of course affects the surface).
The quickest, and least painful thing I've been able to think of is to extract points from the original surface, copy everything into my new drawing in the correct location and recreate the surface using the extracted points.
Am I missing an easier way? I would like my base existing surface to be as accurate as possible, but I also don't want to spend a large amount of my time on it.
Thanks in advance!

[remi678731]

Why don't you insert the dwg into a new dwg with the base point and rotation adjusted. If I was going to recreate the surface I would extract the tin lines block them move and rotate the block then explode the tin create the new surface under the definitions add dwg items 3dfaces and check the option to maintain edges from 3dfaces

[hannac25]

I will try this, I was hoping to avoid exploding the survey figures generated from the survey import but I don't think I'll be able to avoid it.
Thank you!