I just discovered yesterday that I seem to have lost lots of Arq backups. I downgraded from Yosemite to Mavericks and the only backups Arq shows me are from aft

I just discovered yesterday that I seem to have lost lots of Arq backups. I downgraded from Yosemite to Mavericks and the only backups Arq shows me are from after the downgrade. I'll dive into this this weekend, I _really_ hope I didn't lose the actual files, just the indexes.