Hello, I'm working on a website that was too bloated with content. We deleted many pages and set up redirects to newer pages. We also resolved an unreasonable amount of 400 errors on the site. I also removed several ancient sitemaps that listed content deleted years ago that Google was crawling. According to Moz and Screaming Frog, these errors have been resolved. We've submitted the fixes for validation in GSC, but the validation repeatedly fails. What could be going on here? How can we resolve these error in GSC.