Fences, gates and garden walls

[DevilDamo]

It does appear every now and then, minor notational changes are made on the PP website. Having come across another thread relating to gates, it prompted me to check the specific wording. I’m also dealing with a Planning application for new gates, walls and piers for a client. While on the webpage, I came across what appears to be an amendment...
 

https://www.planningportal.co.uk/info/200130/common_projects/20/fences_gates_and_garden_walls

 

“if an existing fence, wall or gate already exceeds the limits above, that its height would not be increased.”

 

When did this change happen as the PP never publishes any amendment dates?