Seeding file server data from a remote site

From what i've read, it's possible to seed backup data from a remote site to a central location by backing the data up to disk or tape, shipping the device to the central location, backing up the data from the device to the dedupe store, and then running optimized dedupe backups between the remote and central site.

However, if the remote site does not have BE server + the deduplication option installed, and instead it just has a RAWS license, is there a way of seeding this data to the central site via a USB drive, or any other method?

Thanks in advance.

Lee