I’ve been increasingly serialising large chunks of RhinoCommon and custom objects to/from files as part of my modelling pipelines (especially for analysis stuff, but also when exploring design spaces and generating phenomes). This is using Python pickling, but .NET will surely have some namespaces for this as well. @dave_stasiuk added some components for writing/reading data to file in his TreeSloth plugin, this might work for you OOTB, or serve as a starting point for developing your own custom workflow perhaps.