Our company site was recently redesigned and all php web pages were switched to html instead. Now, Google is giving off a lot of 404 errors, regardless that our sitemap is updated and submitted (without errors) since a month ago, and almost resubmitted daily due to added pages.
How would I go about correcting this so Google stops looking for the php pages that do not even exist? They are not even listed in the sitemap either which I don't understand. The "detected date" are recent as well, so they are not from prior to the site changes/sitemap update.
The robot is fine. Crawler access shows 20 hours ago as well.
Thanks for the help in advance.