Solutions - List of Approvers to submit the record to includes some who used to have permissions

Solutions - List of Approvers to submit the record to includes some who used to have permissions

(reported with respect to ServiceDesk Plus 2018 Enterprise)

I have removed several Technicians from the Role that allows them to approve Solution Records, however these Technicians still show up in the list of possible Technicians to submit a Solution record approval request to.  

I have double-checked that these Technicians have no other Roles that would grant them these permissions.  

I need help with this.  The permissions were removed to eliminate accidental publication of Solution records in the Requester Self-Service Portal and I need to ensure that removing these permissions works.

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