Why would you do a rebuild and recover process before checking the actual mapping of the accounts? In my experience, each time vendors were not appearing on the 1099 reports it was due to the mapping of the accounts to the 1099 fields, or because the vendor setups were not done correctly. It does not seem logical to restore data to a previous state in which there was seemingly no difference in how the vendors were setup and how accounts were mapped and being reported on the 1099 report.
