Issue Summary

Accounts that were previously provisioned and deactivated through the IdP, are not able to be reactivated in bulk through the Managed Accounts page. When directly accessing the user's profile, and clicking the Reactivate Account button, the account is reactivated. So it's specifically related to the Reactivate button on Managed Accounts.

Steps to Reproduce

1. Provision a user through an IdP.
2. Deactivate the user through the IdP.
3. Delete the user from the SCIM directory or delete SCIM configuration.
4. Go to admin.atlassian.com > Directory > Managed Accounts. 
5. Mark the deactivated user and hit the reactivate button. 
6. A pop up is shown the user is reactivated, but you'll see the user remains in a deactivate state. 

Expected Results

Users are reactivated.

Actual Results

Users remain deactivated. The issue seems to be with the users having their active field marked as BLOCKED.
active: "BLOCKED"

Workaround

Reactivating the users by entering the profile and hitting the Reactivate Account button. Obviously this is not a bulk operation.