Transmission filter change on 2007 Toyota Corolla

I was told by one service agent that the transmission filter on my 07 Corolla should be changed when the fluid is changed. A second place said the manufacturer does not recommend changing the filter. Which one is right?

Asked by for the 2007 Toyota Corolla
The manufacture is right. I never change trans filter on my 88's Celica. I only drain and refill the trans fluid.