If I change the Region of the AWS EC2 instance, should I delete the original pre-migration instance?

I made a Region change/migration of the instance on AWS EC2.
I was able to migrate from Virginia USA to Frankfurt EU without any problems, but is it okay to terminate the older instance that is the original Virginia Region USA?

I searched the whole thing, but I couldn't find any information, so if anyone knows, I would appreciate it if you could give me advice, or give me a solution or link.