If the poll is closed this makes sense. It takes time but you can even take a screenshot of the poll, delete it, and place the screenshot in the first post before you migrate. I thought about this for my multi-question polls since they were contests that members liked to revisit, but I decided it was a waste of time, and nobody ever complained. Sometimes older data is overthought.
whoa !
I linked this thread. https://xenforo.com/community/threads/xenforo-vs-vbulletin-vs-invision-history-of-vulnerabilities-xenforo-the-clear-winner.220263/