TTSD-12076

In a shared model, modified objects with rebar sets are now shared correctly. Previously, for example, if user 1 modified the leg face of a rebar set in a column and wrote out, and user 2 modified a different leg face in the same rebar set and then read in, the changes made by user 1 did not override the changes user 2 had made to the rebar set. This does not happen anymore.