When any probate court shall have first taken cognizance of the settlement of the estate of a deceased person, such court shall have jurisdiction of the disposition and settlement of all the personal estate of such deceased person to the exclusion of all other probate courts.
Jurisdiction once acquired is exclusive
S.C. Code Ann. § 14-23-250, under Title 14, Chapter 23.
S.C. Code Ann. § 14-23-250