The lifecycle management policy (LMP) you applied will affect all items matching it, whether they existed before you applied the policy or were created after you applied it. It takes time for the policy to synchronize across all of your items in S3. See Object Lifecycle Management just before and after "Before You Decide to Archive Objects".
The objects moved by a LMP are only visible through the S3 API, not via the Glacier API or console. You'll continue to see the objects listed in your S3 bucket, but the object's metadata will be updated to indicate that the x-amz-storage-class
is Glacier. You should be able to see this through the S3 console, or by making a request for the object's metadata using the S3 API. See Object Key and Metadata for the System-Defined Metadata
.