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musicoff · #1 02-27-2017, 12:51 PM

Hi everyone.

We recently migrated our forum from SMF 1.1.8 to vB (Impex on 4.2.3 and then upgraded to 5.2.5).
Since we've returned online we've experienced serious problem with search engines crawl: we are literaly submerged of 404s from Google bots and almost the whole of these are returned by URLs with the old SMF path (sitename/topicname); being now the topic's paths updated to vB's synthax (sitename/forum/category/subforum/topicname), we suspect that these errors are caused by URLs linked in users' posts.
Now, our forum is more than a million and a half posts, so it's almost impossible to edit the old URLs manually; however we definitely need to rewrite that URLs, then we were asking if someone here found himself in the same situation and how has solved the problem.

Thanks in advance.

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