The ability to move a parent from Inactive to Leads Center

I would like to move a parent from "inactive" to a "Lead" in the leads center. Right now, we have to have two accounts for a person who has made an account with us (either in the past or recently) if we now want them receive automated contact in our leads center. It is very confusing, and we don't want to delete the account they have already made. Furthermore, "inactive" people are perfect for the "leads center" as they might be ready to come back to dance. I don't want to delete their "old" account when I make them a "new" one in the leads center.