Hi Dan
In ArcMap, the workflow was this:
Add Data - add DWG file
Open Symbology - change symbology type from CAD-based symbology to multiple fields
Convert CAD lines to featureclass
Open symbology for new featureclass, import symbology from CAD polyline line
This way, I end up with one GIS layer in my ToC symbolised exactly how the CAD file was created.
In Pro, when you add a CAD file, it automatically splits the polylines into separate layers in the ToC using definition queries.
Yes, it preserves the colours from the original CAD, but how am I supposed to apply all the symbologies back into the one single imported featureclass?
See graphic.