S3 File Gateway - File operations results the creation of a new S3 object

As mentioned in AWS doc https://docs.aws.amazon.com/filegateway/latest/files3/file-gateway-concepts.html. "Common file operations change file metadata, which results in the deletion of the current S3 object and the creation of a new S3 object" If my object store in S3-IA, so when it has been delete and create a new one, which storage class will the new one store in? S3 or S3-IA Thank you for your support