Passport expiration + entry/exit visa (Riyadh)

To those who can help

my daughter recently received a 12 month Saudi entry/exit visa but unfortunately, her passport is due to expire prior to the expiration of the visa

So, the question is - can we travel with two passports - her new one and the one containing the still valid visa. I have had local advice that says this is 'probably' possible but obviously I would prefer something more concrete before landing in Riyadh

All answers, similar experiences and advice very much appreciated

Simon