Creating, or Updating Section Views from 3D Piping to a 2D Section

[Drafter1981]

To All you 3D Experts Out There,
For once I've run into a problem going from 3D to 2D. I'm trying to create 4 separate 2D Sections, and Elevations based on my updated 3D Piping drawing.
I see that it was done once on the original, so I tried to "duplicate" the updated views without any success.
I've also read through a few of the Forums, without much success in finding an article yet that truly covers how to do this "IN AUTOCAD".
I actually was able to create my section views in REVIT and export the drawing(s) out in dwg format to my customer and it was easier than trying to set this up in AutoCAD. I just had to "Explode Everything" before importing into REVIT, and once I got the import to work correctly, I simply made my views and exported back out into AutoCAD.
Seems like a lot of work just to get a few "2D" sections.
Any help such as where to locate the pull-downs, tool-pallets, ribbons locations or modes (such as being in the 2D mode vs the 3D mode, or 3D modeling) or maybe even the actual command, that I can type in.

Thanks in advance,

Milt: a.k.a Drafter1981

[dgorsman]

This is highly dependant on the software used to create the piping in the first place. Most of them take special steps to properly "flatten" their own models into a 2D drawing which are not available in vanilla AutoCAD, nor in other piping packages.

[jaberwok]

Now you can see the reason for NOT posting in multiple locations.
You have posted this enquiry 3 times and you have had responses to each of them.

Would a moderator please combine these 3 threads.