Do I ply a chipboard floor for lvt

Hi, I will be fitting a Quickstep lvt floor as a floating floor on a chipboard sub-floor, the actual sub-floor looks to be in very good condition . Do I need to ply it out or can the lvt go on without?
Many thanks.

 

You'll be OK with the click system.
Obviously dry back would have needed plying & feathering out.

 

Thanks, I thought so but wasn't sure.