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It is always suggested to check the compatibility matrix to make sure the versions of the Configuration Manager for Jira (CMJ) is are the same between the data center Target Jira instance and server Source Jira instance.
For more information, refer to this link: https://botronsoftappfire.atlassian.net/wiki/spaces/CMJ/pages/478416282777122/Compatibility+Matrix
Snapshot compatibility between Jira versions
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