0004882: Expression render old content after "Alter Role Played By"
Description
The expressions in the diagram rendered on OTL level, will retain the old OT while a role is altered to a different playedbyot. Only an edit on anything in the model will refresh the OTL Level Expression Cache.
Some routines signaling the cache to reload, have been replaced by checking the internal transaction numbers whenever the cache is consulted. This results in a more consistent behavior.
