Freshen them up and they will be fine. Remember take the time and clean them on the outside with scent free soap and water. Only handle them afterwards with scent free gloves and store them in freezer ziploc to keep them scent free. Yes it matters especially for mature educated deer.
I personally dump mine and add new urine. If kept in the fridge they would stay fresher but the wife would stay madder. Good tip about de-scenting the outside though.