The Document Hub system is not designed for a storage facility.
The Document Hub or Client Portal folder is only for temporary file transfers and should not be used for long term storage. The Client Portal folder in Document Manager is designed for the secure exchange of documents between you and your clients.
To follow the correct process, you should move all documents out of the Client Portal folder and into the correct Document Manager folder once the transfer is complete.
Note: Documents left in the Client Portal folder may not be recoverable.