My travel packages are never in the unused certificates portion once they're attached. My reservations read:
"Marriott Rewards Redemption

The certificates attached to this reservation may not match the number of days, room type, or other features of your stay. Please call Guest Services to ensure you have the proper certificates for your reservation."

If they're still in the unused certificates area after you're being told "they're attached to your res.", doesn't that mean that they're not really attached? Or does it keep bouncing in and out of your unused certificates portion?