The only way I see would be to export each asset's metadata into XML format, then have Final Cut server scan the raw asset graphics files and clips and create it's own assets from it, then figure out some way of having FC Server read back those XML files and apply the metadata to the right files. There is no Artbox device to be had in FC Server that I can see right now, as Artbox had a Xenostore device that you could plug in, scan and get all the metadata.