Regardless of whether or not it's possible, I'd consider it to be one of those Occam's Razor things.
If the point of it is to just have an old character you once played available to play again, there's a simpler way to achieve that: making the character again within the setting.
If the point of it is to just have an old character you once played available to play again, there's a simpler way to achieve that: making the character again within the setting.