The former Article 5 of this chapter, known as "The Georgia Gifts to Minors Act," is repealed. To the extent that this new article, by virtue of subsection (b) of Code Section 44-5-132, does not apply to transfers made in a manner prescribed in "The Georgia Gifts to Minors Act" or to the powers, duties, and immunities conferred by transfers in that manner upon custodians and persons dealing with custodians, the repeal of "The Georgia Gifts to Minors Act" does not affect those transfers or those powers, duties, and immunities.