The cross-curvature flow conjecture for negatively curved three-manifolds

Let $M$ be a three-manifold equipped with a negatively curved metric, and let the Cross Curvature Flow (XCF) evolve this metric. A hyperbolic metric is a metric of constant negative sectional curvature. Cross-curvature flow conjecture. The XCF deforms arbitrary negatively curved metrics to a hyperbolic metric. This conjecture would extend the preceding result from integrable negatively curved metrics to arbitrary negatively curved metrics. The source does not state that it has been resolved.