I asked a question on Stack Overflow, which was migrated: Android: how to force browsers not to reload recently seen page after resume But before the migration I got 2 downvotes, which I still have in Stack Overflow. I think that should be deleted or migrated as well.
Downvotes do not follow a migration, that's by design and the reasoning is that your question is starting a new life on a new site. Upvotes on the other hand do follow the migration, and the reasoning for this, I'm guessing, is that we are just that nice.
The downvoted & closed version of your question will be deleted eventually, when that happens you will get back your reputation (again, we are that nice ;).