[Users] Import pre-configured storage domain

Hi, What's the procedure for importing a previously-conifgured NFS storage domain? I reinstalled the ovirt-engine recently and wondered what the process is for keeping my preexisting VMs. I've tried using the "Import Domain" feature, but it appears that regardless of whether I provide the full path to the storage domain parent directory or the GUID directory within, I get an error: "There is no storage domain under the specified path. Please check path". I've tried both "host.domain.name:/path/to/export" and "host.domain.name:/path/to/export/dce1cb9f-50ff-4d6d-9681-d901c53da684" to no avail. Thanks, Ian