Migrate data from AWS based MongoDB Atlas to GCP based MongoDB Atlas

Our end goal is to migrate data from MongoDB Atlas cluster created in AWS to GCP based MongoDB Atlas.
As part of our exploration, we want to create a Database in GCP cloud provider but that DB will remain within the same existing AWS MongoDB Atlas cluster.
Could anyone please guide if that is possible and how?

Sure you can create a multi-region or multi-cloud cluster on MongoDB Atlas (see https://www.mongodb.com/docs/atlas/cluster-config/multi-cloud-distribution/) and/or move between cloud providers or regions without downtime at any time.