Probate courts subject to this article shall have concurrent jurisdiction with superior courts with regard to the proceedings for:

(1) Declaratory judgments involving fiduciaries pursuant to Code Sections 9-4-4, 9-4-5, and 9-4-6;

(2) Tax motivated estate planning dispositions of wards' property pursuant to Code Section 29-5-5.1;

(3) Approval of settlement agreements pursuant to Code Section 53-3-22 of the "Pre-1998 Probate Code," if applicable, or Code Section 53-5-25 of the "Revised Probate Code of 1998";

(4) Appointment of new trustee to replace trustee pursuant to Code Section 53-12-170;

(5) Acceptance of the resignation of a trustee upon written request of the beneficiaries pursuant to Code Section 53-12-175; and

(6) Acceptance of resignation of a trustee upon petition of the trustee pursuant to Code Section 53-12-175.