It appears that this decision to retroactively delete the involvement of AsRoc in Operation: Prometheus extends a bit further than I thought. While scanning through "Handbook: Major Periphery States," a good section of the Amaris family's beginnings was omitted, specifically Terens Amaris and Heather Durant's relationship.
How much of the Rim Worlds Republic's history has been retconned? Is the Amaris line still tied to the Terran Hegemony? I realize this is sort of a "big" question, but it was definitely begged to be answered after the AsRoc ties to Prometheus were "deleted" after 20+ years of being canon.