I've had the same Vanguard accounts for 15 years (Rollover IRAs, Roth IRAs, non-retirement) and I don't remember having to migrate anything. If something was

I've had the same Vanguard accounts for 15 years (Rollover IRAs, Roth IRAs, non-retirement) and I don't remember having to migrate anything. If something was migrated, I wasn't even aware it happened.