I imported survey data from a file into the drawing and created a surface from the points and figures. No problem. Engineer wanted to change the datum from assumed to known. At this point all figures have been copied to a new layer flattened and changed to 2D polylines in order to hatch. Then the figures reimported. I raised all the points with the edit datum and raised the figures with edit survey figures. Surface was adjusted and tweaked. Everything was fine. I open the drawing and all the figures are back at assumed datum and the points are on the right datum. Now when I tweak the surface it uses the bogus elevations from the figures. How can I get my figures to save the adjusted elevations?
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The figures were changed to another layer. If I translate they come in on the initial layers. Now I have figures and 2D polylines on the same layers. I am unable to hatch concrete areas with survey figures. The solution we have to that is to explode the figures, flatten and convert to 2d polylines. Then Wblock out. Change survey figures to one layer. Wblock in. Now Edge of conrete is on right layer and we are able to hatch. This all worked well, until we had to modify the surface. What a mess!
If the data you are modifying is survey data we have found it easiest to modify the elevations in your source data. I.E Ascii.txt import file and then reimport. Trying to change survey data inside your drawing can lead to issues as you can see.
We only import ascii files so this isn't a big deal. However, if you're importing FBK or XML data you may have a more difficult time.
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