Residential Visa for Wife has old passport number

Hi friends, I processed residential visa on old passport which has ECR stamped for my wife. Now she received new passport which has not ECR & ENCR marked on it. She is coming from India to dubai in next two days. We don't have much time to change visa with new passport number. Can she travel with two passport & I will change  passport number with new one before stamping visa. Note that profession is House Wife. Can anybody faced this problem. What should be my next step to smooth
transition.

Can anyone update me on above mentioned issue??