Can a mortgage co put a late mark on your credit for the first 60 days?

I have a mess, I was once told a mortgage co can not mark you late during the first 60 days of a transferred loan. Does anyone knoe if that is true???Can a mortgage co put a late mark on your credit for the first 60 days?
That is true, especially if you sent your payment to the old motgage company.Can a mortgage co put a late mark on your credit for the first 60 days?
I've never heard that, and it doesn't make sense. When a loan company sells out to another, it does not change your obligtion to pay each month.
I have heard that also, but from unreliable sources. I wouldn't risk being late on the mortgage.