Approval Delegation Missing Category

Hi all,

Issue: Recently, our end users have noticed a number of Categories missing from the Approval Delegation.

Pre-24B:

Post-24B

(Not to say this is a 24B issue)

I checked with Transaction Framework - Export Task Categories as suggested by Doc ID 2724671.1 and I do see the former categories on that list.
For example, when I check BPM Worklist for 'FinExmWorkflowExpenseApproval', I see the category as 'FinExmWorkflowExpApproval'

Any thoughts as to why this is happening? Much appreciated