(1) The revocation by the testator of a will that revokes a former will shall not revive the former will, even though the former will is in existence at the date of the revocation of the subsequent will.
(2) The revocation of a codicil to a will does not revoke the will, and, in the absence of evidence to the contrary, it shall be presumed that in revoking the codicil the testator intended to reinstate the provisions of a will or codicil that were changed or revoked by the revoked codicil, as if the revoked codicil had never been executed.