Okla. Stat. tit. 22, § 22-566: Trial on change of venue - Records and papers

The court to which the action is removed must proceed to trial

and judgment therein the same in all respects as if the action had

been commenced in such court. If it is necessary to have any of the

original pleadings or other papers before such court, the court from

which the action is removed must at any time upon the application of

the district attorney or the defendant, order such papers or

pleadings to be transmitted by the clerk, a certified copy thereof

being retained.