Terminate employee under SSO but process open expense
We use Okta for single signon, including email and Expensify. Employee Expensify accounts are under their work email address. Sometimes there are open expenses in Expensify at the termination date. Even though the employee's expense account is not deleted by Okta (it's a manual step in Expensify), at termination, the employee can't sign-in to Expensify under our SSO, and the email address that Expensify knows them under no longer exists.
Is there a method for completing an expense reimbursement (let's assume it's been submitted at least) under these conditions? Thanks!