Once I'm done extracting the Object Data I need, I usually get rid of it to keep the drawing size as small as possible:
This seems counter productive to me. I think of all the time wasted putting object data onto the objects, only to have it deleted?
What happens when and or if that object data is ever needed again?
Then I just go back to the 'source' drawing where I've already imported the County's GIS/Shapefile data with Object Data, and cull what I need, of course (i.e., project length changes, etc.)... Otherwise, I can simply run MAPIMPORT as needed (i.e., newer Shapefile is available, etc.)... That's only happened to me on 3 projects in the past 10 years, FWIW.
Cheers
Now that I see where your 'data' is coming from, that clears up the question of why you delete the object data.
A lot of the object data we deal with here is created, and added by us, so removing it seemed a foreign concept to me.
Thanks for the clarification.