Required to use Approval Process ID "AbsenceManagement" w/FLUID?

We are in the early stages of testing Manager Self Service Fluid and one of the first major issues is Absence Request Approvals. They don't look correct in the approval summary or detail, and the approve/deny options are not available. Absence Cancellations do not have this issue. When we went live with Absence Management in 2017, we used the Absence_Mgmt_ByPosnSupervisor Approval Process ID on our Country Takes, which we've never had a problem with in Classic. I'm thinking that AbsenceManagement is possibly hard-coded in PeopleCode as the Approval Process ID, which is causing our issues. Is anyone else successfully using the Approvals tile in MSS for Absence Management, but not using AbsenceManagement as your Approval Process ID?