User blog comment:MisterWoodhouse/A change to Shared Help on the Unified Community Platform/@comment-45935582-20200710020640/@comment-24006128-20200710141049

Odds are good that this blog doesn't affect your day to day usage. It's for the wikis which both have the custom content and also think it's worth preserving. Thankfully, they can get the custom content back at any time through the URL parameter.