title: Entity framework migration and seeding specific update
body: <p>does anyone know how you can seed a specific update using EF 5 migrations? I have existing database, alredy has lookups populated, and am developing some Audit functionality. I have created an AuditType entity and Audit. When I call update-database, I don't want all my seed data from when I first created the database to be re-added. Do I simply have to manuall delete the existing seed data out or can I do something like name a Configuration.cs with the datetime similar to what gets created when I call add-migration?</p>
  
  <p>Thanks</p>