Mortgage brokers and credit reports?

After raising our credit scores to the mid 700′s we’re trying to refinance our condo. I have all 3 credit report for myself and my husband. Every mortgage broker I’ve talked to wants to pull up our credit before they even talk to me further. Is this necessary and will it lower out credit scores?
Why won’t the brokers take the reports we’ve pulled down as a reference in the beginning of the process?

By kdabrowski |