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As a big change in the latest versions, GDPR is fully enforced on Jira Cloud. Power Scripts will requests, depending on the script, the user details. The username user key is not a username anymore, but the account id of the user making the requests. This means that assignee == "john" may not work anymore, but instead it will be replaced by a more cryptic account id. We do recommend you to use constants instead of direct usernames so you can script them easily.
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