AWS Organization Migration from one Account to another account, resources are not visible

Which resources are you not able to see?

When you remove a member account from an organization, the member account's access to AWS services that are integrated with the organization are lost. In some cases, resources in the member account might be deleted. For example, when an account leaves the organization, any AWS CloudFormation stacks created using StackSets are removed from the management of StackSets. You can choose to either delete or retain the resources managed by the stack. For a list of AWS services that can be integrated with AWS Organizations, see AWS services that you can use with AWS Organizations: https://docs.aws.amazon.com/organizations/latest/userguide/orgs_integrate_services_list.html

From https://aws.amazon.com/premiumsupport/knowledge-center/organizations-move-accounts/