Take a backup of your data at your current site. You can then restore the backup at your new main site, before you re-upload your company to RDA.
Now you can set up Remote Data Access again, then re-upload your company.
You can now grant access to any other remote users you want to have access to your company.
You can now disconnect the remote sites and reconnect them to the new data:
If you use any of the following online services, you must reconnect them: