I have a few questions regarding Jira project migration and using CMJ
We are in the process of consolidation our Jira instances into one Jira DC. We have X no of instances with different versions (7.x). These instances won't match to our target instance Jira 8.x. It is recommended that the source Jira and target Jira should be on the same versions. But, we can NOT upgrade our source instances due to the validation process which would take several months only for upgrade. So we started the importing projects using CMJ without upgrading our source instances. And I did so, as CMJ told that without matching the versions, it should be absolutely fine.
But, during the deployment I got the warning of Version Difference: "The snapshot was created on Jira 7.x and you are deploying to Jira 8.x. Deploying a non-compatible snapshot may result in deployment failure, configuration errors or data loss".
So my questions are:
I am very nervous if we would lose data or so. Thanks for reading this!
Your help would be really appreciated!