Impossible to migrate from 16.9.98 to 21.7.28 with 20.9.89 recommendation

It appears the current repository only goes back to 22.6.1.53 Releases · Manager-io/Manager · GitHub

The archive versions go back to 21.4.42 Releases · Manager-io/Manager.zip · GitHub

So I suspect @lubos will have to indicate what is the current preferred solution as his prior advice is no longer possible Business database not valid, desktop version on Windows 10 - #2 by lubos

Downloading from a forum post is not ideal (and the forum limits uploads to 8MB)