How do we hide users from the requester list that had disabled AD Accounts? – Project Member, Requester, etc.

Many users start out as a contractor, with an ID that starts with a 9, then they are converted to a full time employee.

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Example:

In active directory, there's a disabled account and an active account.

Both accounts are in ServiceDesk, which makes sense, because we don't want orphaned tickets for disabled accounts.  But, for new tickets, it would make MUCH more sense for the disabled user to not show up as an option.

The only way to know which account is which in the drop down is by email address.