I have mapped a the "Address" field across Leads, Contacts, Accounts, and Potentials is there a way to....

I have mapped a the "Address" field across Leads, Contacts, Accounts, and Potentials is there a way to update the "Mailing Address" field in Contacts, and have it auto populate the linked "Mailing Address" fields in the Potentials?

I get it that I can populate the Mailing Address fields in a the "Leads" section, and when I convert the lead to a Contact and a Potential it copies the Mailing Address across to the Mailing Address fields in the Contacts, Potentials and Accounts, but how can I do this from a Contact after its already converted to a Contact and the Contact, Potential and Account is already set up???