SHS` wrote: The converter only does batches of 2000 posts (previously 6000, as we were testing it on the phpBB.com DB), and have successfully restarted it (also by deliberately killing it) with it only clearing out the last partially completed batch (otherwise will get double-converted topics/posts/PMs).
It seemed to have scrapped the existing posts and started over when I was doing it. I had phpMyAdmin open with one tab showing things before the run began, and another that I refreshed every few minutes (sometimes faster) to see the running results. The crashes came at about the 63,000 post point using the original default settings of 6000/30, and I saw it cycle up through the 20,000 post point after the first restart. I saw it cycle through that point again when I set it to Meik's 2000/10 setting suggestion, which is what allowed it complete.