I remember there was an official post about it a bit back, even though I can't find it now. Stratovarius, Prime, and the rest of the fine folks maintaining the new boards these days set it up to automatically convert links from the old minmaxboards into links to the new minmaxforum site. Even though the BBCode has the old urls, it gets converted just fine into working links without any manual correction. For example, your dead link and revised link, if you actually click them, both go to the same place.
A few links are still broken, though. The minmaxboards version of the forum could link to a single post, loading only that post, rather than the entire page and just automatically scrolling down to the post. The new boards don't have that, so any links using that feature don't work right. They lead to the right page, at least, just not to the desired post within it.