Hello,
Unfortunately, we do not have a key management utility at this time to allow you to manually move keys inside the registry. The registry storage requires a password caching that cannot be done without user interaction.
If you were going to transfer users from one Pragma Fortress Server to another, then you could use a registry export/import to move the keys, but you cannot do this from a different server.
I recommend using the auto-storage feature and have your users connect with their key as they normally will. They will be prompted for the password at the first connection, allowing us to store the key in the registry, then any further logons will be performed as usual without user interaction.