adadmin - Do I need to run adadmin again when adding new new entites to an already multi-org environ

We have one business group with one legal entity, one operating unit, and one inventory organization.  Adadmin was previously  run when these were set up and we have been using for a long time on our 11.5.8 environment.  Now, we want to add to the same business group 2 new legal entities each with their own operating unit and invenfory organization.  Should we run adadmin again or just run the Concurrent Program Replicate Seed data?  I found the User Guide a little confusing.