Ah, it tends to be best if you keep separate support questions in separate topics so they don’t get lost in the mix (and it helps people when searching for answers later).
Edits can be hidden and also permanently deleted if a site has that particular setting enabled, so they could go down in that case. But people do often muck up a poll and then can’t edit it after 5 minutes, so will rather burn it and start a fresh topic instead.