Okla. Stat. tit. 58, § 58-8: Transfer of old matters authorized

When it is made to appear that any probate matter pending in any

court of this state which, by acts of Congress and the Constitution,

was transferred from the courts of the Territory of Oklahoma and the

United States courts in the Indian Territory to the courts of this

state, is not in the county where the venue of such suit, matter or

proceeding would lie if arising after the admission of this state

into the Union, the court where such suit, matter or proceeding is

pending shall, upon the application of the guardian, executor or

administrator, or any other person having a substantial interest

therein, or upon its own motion, when a proper showing has been made

for a removal, within twenty (20) days after application is made

therefor, make an order transferring such suit, matter or proceeding

to the county where the venue would properly lie if such suit,

matter or proceeding had arisen since the admission of this state

into the Union, by transmitting to such county the original papers,

together with certified copies of all orders and judgments, upon the

payment of all accrued costs: Provided, that where any minor is the

owner of an estate situate in a county or in counties other than

that of his domicile and a guardian or curator has heretofore been

appointed for such minor or his estate in any such county other than

that of the domicile of such minor, such suit, matter or proceedings

shall be transferred in the manner and upon the conditions herein

provided, to the county of the domicile of such minor; And provided,

further, that such original papers, together with such certified

copies of all orders and judgments, shall be filed in the court to

which such matter is removed, and the same shall proceed as if

ordinarily filed therein, without further service of notice.