Can I do this whilst my forum is online and people are posting etc? I should have done it after I upgraded but it was taking forever so I stopped it midway, now obviously search isn't working very well so it needs to be done but I have a large forum and anticipate it taking a very long time, i.e. an overnight job. I don't want the forum offline for that long so would I be ok leaving it online and rebuilding at the same time?