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Generate the mapping of the configuration objects' native IDs from the snapshot to the matched objects' IDs from the current system.
This could be done by enabling the "Persist deployed snapshot to current system native ID mappings" setting in CMJ's general settings page before deployment- https://botronsoft.atlassian.net/wiki/spaces/CMJ/pages/33456130/General+Settings
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You could use the generated JSON file to check the mapping of the sprints after the deployment.
Then
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you could update the activated date of the target sprints in the AO_60DB71_SPRINT
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Database table for the corresponding sprints in the target system to the sprints in the source instance
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by ALTER AO_60DB71_SPRINT.