Refinancing My Mortgage. What Do I Need?

refinancing

Ok someone I know is refinancing their mortgage. I have done it before but it has been years since I have refinanced. They told this person they needed a copy of tax return from last year. So they got this. Now they want a W2. The W2 is nowhere to be found. Just wondering why they need this when they have the tax return in front of them.
It is a friend of theirs and the tax information should show that. It is just really weird.