Its nothing to do with currency, its validity that counts. If your SEP is valid just apply for the new license. If your SEP has expired, then you need to go through the renewal process before you apply, unless you want to receive two bills, one to have the licence reissued and another to have the rating added to it. If you revalidated the SEP whilst the licence was out of date, then the Examiner who signed, it has failed to do his job correctly and left you requiring a renewal.