Unless otherwise provided by the will, the provisions of chapter 637 that conflict with this subchapter VII, part 3 , shall not apply to the allocation and distribution of estate income. [C73, §2403 – 2405; C97, §3334, 3335; C24, 27, 31, 35, 39, § 11953, 11954; C46, 50, 54, 58, 62, §635.49, 635.50; C66, 71, 73, 75, 77, 79, 81, §633.352 ] 99 Acts, ch 124, §31 ; 2012 Acts, ch 1123, §7 ; 2013 Acts, ch 30, §164 ; 2018 Acts, ch 1041, §127