To the current release: Smart ID Messaging. 

1. Enter a word in the search box in the top menu, e.g. “upgrade”.
   1. The search result shows only articles in the current published space.
2. Open Filter by SPACE and set Search archived spaces
   1. The search result will include articles in the archived space and the current published space.
   2. Articles in archived spaces start with the release version, e.g. “4.6 – Upgrade…”

You can also search for a specific version, go to the product version and see instructions there.