1、create a regular RVT map
2、create a movable static mesh and add some animation or physics to it in order to make it move，render this mesh to RVT
3、call URuntimeVirtualTextureComponent::Invalidate every frame in the level blueprint, make sure the dirty bounds covers the mesh
4、you will see the RVT under the mesh get updated only when the RVT is not adaptive
There's no existing public thread on this issue, so head over to AnswerHub just mention UE-121386 in the post.