All deeds, deeds of trust, mortgages, chattel mortgages, contracts and all other instruments required or permitted by law to be registered which have heretofore been accepted for filing and registration by registers of deeds on a date preceding the date of the clerk’s order of registration are hereby validated, approved, confirmed and declared to be valid, proper, legal and binding registrations to the same extent as if such instruments had been accepted for filing and registration on the date of or subsequent to the date of the clerk’s order of registration. (1957, c. 1430.)