The pages which you have redirected to other pages were deleted because they were redirects. We're trying to fix all our broken links, so we've deleted those redirects in order to find the pages with the broken links. It'd be helpful if you could remove the broken links, rather than simply redirecting them again. You can visit this page and click on the amount of links next to the page which will lead you to the pages where the broken links are so that you can fix them. This will be much more helpful than redirecting back.
Regarding the fixing of broken links, try to replace broken links with the correct appearance (e.g. If it shows Violet Protodrake, fix it to show Violet Protodrake Leash rather than changing the name of the destination only). If of course, the link is designed to show something specific, then change the name of the destination only.