Understanding HelpNotes vs BugNotes from website

It looks like if each new version also includes all the previous one. If so, then all of those issues are fixed compared to which baseline ?  3.2 ? 

I personally would like to see both views, that is, all issues listed from 3.2 up to this latest release, but also each bug fix for each version (and not the previous).

At the same time, there is another kind of release note for each version. For example, https://downloads.gemtalksystems.com/docs/GemStone64/3.2.x/GS64-ReleaseNotes-3.2.10/GS64-ReleaseNotes-3.2.10.htm

So that confused me too. So we have bug notes on one hand and release notes on another hand? 

Release notes, on the other hand, seem to only show the ones really fixed in that version and not in previous. 

Finally, there are things in the ReleaseNotes that do not appear in the bug notes. For example (I pick a random issue), issue 45720. It appears in ReleaseNotes, but not in BugNotes. 

Any clarification is more than welcome.

Thanks in advance,