Okla. Stat. tit. 12, § 12-1145: Recovery where plaintiff's right ceases during action

In an action for the recovery of real property, where the

plaintiff shows a right to recover at the time the action was

commenced, but it appears that his right has terminated during the

pendency of the action, the verdict and judgment must be according

to the fact, and the plaintiff may recover for withholding the

property.