A. A mortgage is a lien upon everything that would pass by a grant of the property, but does not entitle the mortgagee to possession of the property unless authorized by the express terms of the mortgage. After execution of the mortgage, the mortgagor may agree to a change of possession without a new consideration.
B. Title acquired by the mortgagor subsequent to the execution of the mortgage inures to the mortgagee as security as if acquired before the execution.