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Hi, My client recently undertook a site migration. Since the new site's gone live GWT has highlighted over 2000 not found errors. These were fixed nearly 2 weeks ago and they're still being listed in GWT. Do I have to wait for Google to re-crawl the page before they're removed from the list? Or do I need to go through the list, individually check them and mark them as fixed? Any help would be appreciated. Thanks