Training mode no longer saves a correction that does not say what the right answer is, and a page deleted from your site drops out of the bot.

Improved: In Training mode on Preview & test, telling the bot something is wrong without giving the right value (for example "the link is wrong") no longer saves anything: the bot asks you for the correct value instead. An instruction you repeat is saved once, a correction can replace the instruction it corrects, and when two of your instructions disagree the bot follows the one saved most recently.
Fixed: A page that no longer exists on your site is marked Needs review on the Sources page as soon as HelpJet next fetches it, and its content is removed from the bot, so the bot stops answering from the deleted page and stops linking to it. A site's group shows how many of its pages are no longer on the site, with Remove missing in the group menu.