One feature of Discourse and not in vBulletin is the number of times someone has clicked on a link in a thread. But if you look at some of the older threads which have links in them, they frequently have numbers of attributed clicks that seem extremely unlikely to have been clicked after the conversion to Discourse. This would suggest that the number shown includes clicks when the site was still in vBulletin format, and that though this information was not displayed in that system, the information was still being collected.
Is this correct? And is it also true of anything else?