Do you have a deadline for the old panel and servers?
We are doing this in batches. Starting at the beginning of November we will be alerting users on specific Nodes to move any sites before the end of that month. If your site is not included in the shutdown each month you can still move it starting today. We will repeat this for the next few months shutting down a handful of servers each month starting in November 2023. Once all old servers are shutdown if you have not migrated your account over or closed your old account using the option in settings on the new panel it will be automatically closed and the old panel will be shutdown.