backing up 4 down jeep jk

My manual for my 2017 jeep wrangler says backing even when the transfer case is in neutral and you are in dingy towing mode can cause damage. I have towed four down in the past and occasionally have backed up a little with some success in a tight spot. I was not towing a jeep at this time. So my question is lets say I am towing four down I pull into a gas station and for some reason I need to back up 10 feet. Will this cause damage to a 2017 Jeep wrangler while in dingy towing mode???

Thanks
Dave