再度指紋を採取して申請しなおす必要があります。
証明書は、送付した指紋の用紙にスタンプを押したものなので、複数枚必要であれば、必要枚数だけ指紋を採って送らなければなりません。
Res.2マリオさんがおっしゃるように、RCMPのHPにも次のように書かれています。
Q: I had a criminal record check done in the past but no longer have it. Can you send me another copy?
A: No. The RCMP is not authorized to keep civil (non-criminal) fingerprints or copies of the certified results on file. All original documents are returned to the applicant with the results certified on the fingerprint form. You must re-submit a new application (i.e a new fingerprint form and applicable fee)
http://www.rcmp.ca/crimrec/finger_faq_e.htm