i'm not sure what you mean?
Adumatta and it's people were mainly important in the early history of Ancient north Arabia, mainly from the 9th to the 5th century BC. It would be the Nabataeans and Petra who would take over their role, which subsequently was succeeded by Palmyra. Hence a late mode should mainly focus on these two settlements, as Dumah wasn't of much importance then. The Nabataeans have been presented as a faction in ATB, I'm not really well informed on the late mod project. So I'll let one of their members answer that question instead. Hopefully this was what you asked?
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