...
Backup My Org has the ability to clone content from one ArcGIS Organization to another. While it is hypothetically possible to clone an entire Organization all in one go, we highly recommend breaking the process down into several smaller steps. This allows for a more stable migration, easier rewiring of various components after the cloning, and better error management.
After cloning content, there will often be a post-processing step. During this process, you can review URLs, Esri IDs, and other content that BMO could not directly rewire. Here you can specify custom URLs, IDs, or other changes that may need to be updated in the target ArcGIS Organization.
Cloning Users
In Backup My Org (BMO), you will want to begin by cloning the Users you want to move from the source Organization to the target Organization.
...