For the record, these instructions still seem to work.
That said, there is an error in the query under 'if there are many packages that are seen to have originated from another server'.
It reads
update ItemNSSource set OriginNSSourceNSId = <server ID> where ItemGuid <> 1 and ItemGuid in(select distinctPackageId from SWDPackage)
but would appear to call for
update ItemNSSource set OriginNSSourceNSId = <server ID> where OriginNSSourceNSId <> 1 and ItemGuid in(select distinctPackageId from SWDPackage)