The county legislative bodies of new counties so formed may appoint a commissioner or commissioners to transcribe the records of all title deeds to lands and mortgages and other pertinent instruments affecting lands lying in the new counties, and when the transcript is completed, the register of the county from which the same is taken shall affix such register's certificate to the transcript, and the same shall be filed with the register of the new county, and a copy from the transcript shall be as valid evidence of title in all courts of law and equity in this state as the original would be; provided, that the expenses of the transcript shall be paid by the county or counties for whose benefit the same is made.