How to transfer security group to another AWS region
To transfer security group to another AWS region from the Main Menu, select Security Management.
Under the Security Group list from the context menu, click Transfer.
From the new window select the following:
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Destination region
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VPC – To create security group outside VPC, select No VPC from the list; otherwise select VPC ID where you want to transfer security group
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Enter security group name and description
Click Transfer to recreate security group with all rules in destination region.