Blæh, someone ****** up somewhere then, because my "ForLayout" files all have internal borders for the major periphery nations on all maps except the founding ones.
In 3067 there are three unions in the Taurian Concordat.
Hyades Union - border cuts corewards between Atreus Prime and Sterope.
Farseer Union - border goes between Davetal and Gant, and up below Cadiz, Orkney and Charleston. Micros III is regional capital.
Perdition Union - the rest. Perdition is capital.
Øystein