If, upon the termination in favor of any contestant of a contest brought under this Part, the land or any part thereof involved therein is not then lawfully subject to entry by the contestants, they shall in like manner have the exclusive right to require title thereto, as heretofore provided, within six months after the land becomes liable to legal disposition, of which fact the said register shall notify him or his attorney of record by mail or otherwise.
La. R.S. § 41:464