Oh I know how that goes... When I first acquired our community I figured we'd "start fresh" and purged everything...
Newer times and I'm wondering how much good "Google Food" I purged...
I do however happen to have a backup of all that old data, in a threads7.0beta format, but I'm still waiting for a UBB.T7 -> UBB.T7 importer so I can merge forums...
I have several sites I closed, and have stuff to merge here and there on my active sites, but I wait patiently until then...