FinArTrxnsCreditMemosApproval > IEX_ADMIN

In this workflow, in the Collection Agent Workflow Routing Participants assignee, there are two seeded rules, both of which reference a userRole of "IEX_ADMIN".

As far as I can see, there is no job role, abstract role, privledge, etc called IEX_ADMIN, so what's this IF statement actually doing? Is this just a holdover from EBS, or maybe from an old version of Cloud?

One rule says IF NOT IEX_ADMIN, and the other says IF IEX_ADMIN, and our credit memo disputes are clearly following one of them, so what's it doing?