We are going to migrate Jira from Atlassian cloud to our on-prem server(7.12.3).
So we need atlassian support to do this process with out any conflicts & with out lose of DATA.
Before that we want to know what are all the preconditions steps need to take care of SOURCE (Atlassian cloud) and Destination(On-Prem).
What we need to know all configuration steps in detailed.