@PurnaChandraBoyapati @markrekveld some of those questions are answered here How to migrate customers to the correct region after releasing data residency support
There’s a migration process that customers can trigger for their Jira/Confluence instances documented under the “Request a data residency move” section
While we’re moving your product to its new location, it will be offline and your users won’t be able to access it. This process takes around two to four hours, depending on the size and type of your data. You should, however, plan for your product to be offline for up to 24 hours.
This is due to how we schedule data residency moves. When you request a move, you select a 24-hour move window. We’ll start and finish your move during this time, but we cannot say exactly when. So you can follow our progress, we’ll email you when your move starts, and when it’s finished and your product is back online.
At the moment there are no Connect webhooks to allow apps to migrate their data during that migration window.