I performed a migration to a new server but upon going to the new server address Omeka refuses to bring up the old site, it wants to install a new one. There is nothing in the migrate or update documents about this event. I have checked the migrated SQL and the previous records are all there, including the users it now wants me to make fresh. Why is it unable to find itself and insisting on doing an install (fresh configuration)? Before the migration I upgraded to the latest version, which is essentially the same procedure other than the database export and import, and it worked flawlessly.