Can I keep caster wheels under the Stokke® Sleepi™ Junior?

The caster wheels which come with the Stokke® Sleepi™ Mini and Bed can only be used up to the stage when the side panel of the Sleepi™ Bed is removed to allow the child unaided access to the bed. The caster wheels must not be used under the Stokke® Sleepi™ Junior Bed, as this would jeopardise the stability of the bed.