Group by Layer/Tag

[mihai.s]

Thank you, @slbaumgartner!

It will shorten working times considerably, compared to what I showed in the post

Cleaning up tags

Every ‘rule’ has its exceptions. Even if it’s not a rule per se, but just a tip for beginners - keep the geometry Untagged, until they manage to learn and understand basic things on SketchUp, in this case, it helps you understand one of the exceptions. DO NOT use the 'Default Tag Geometry' plugin (at least, not in this case directly), you have a (almost) well-made drawing (with layers from CAD), and the automatic transfer of geometry to Untagged will remove useful data and make your work much…

The important idea is that when a dwg file is imported, the layers should not be deleted automatically, because useful information is lost.
In fact, layers+geometry from dwg should not be deleted anyway, but grouped in a folder and that’s it.