Hate to open up an old topic, but this came up last week so I wrote up a proof of concept showing how to group curve geometry from a family instance by the associated line style. There are some weaknesses in the methods used, but it’s working well so far and I thought it could be a good example of showing how to move between documents and data sets within a Dynamo for Revit Python environment.
The package is up on the Dynamo package manager in a package called GroupFamilyInstanceCurvesByLineStyle
