This is a common issue with online businesses who are rightfully concerned about their existing SEO strategy when they go through a redesign. While it is a good marketing approach in certain instances to go through with such a move, it is equally important to do in such a way that does not require you to start all over again in terms of search engine rankings. This often happens when a URL is renamed, perhaps to make it shorter and easier for visitors to remember. When that happens, some work needs to be done to ensure that Google and other search engines continue to recognize it according to the existing protocols that you have set in place.
One way to do this is effectively is to generate what is called a 301 redirect. You will want to include this protocol for every redirect that you have for the URL on the site that you are replacing. These should be redirected right to the URL that is now located on the new site. While this might sound difficult, there are some user-friendly tutorials published online that can assist you. This will prevent you from having to go through the added expense of having a professional designer go into the site and make the changes for you.
When you do the 301 redirect, you will want to make sure that you copy and backup your .htaccess file. This will allow you to easily replace items should anythings become messed up in the process. It is a way of safeguarding the work that you have put into the redesign process for your website. While this will work to help keep your existing pages intact when it comes to your current SEO strategy, keep in mind that you will still need some time to get the new site ranked. You will probably be better off focusing on that than you will be on redirecting old pages. Look at your content and get it optimized for the keywords that your target audience is searching for. Over time, this will bring you more unique visitors to your website each month. For more information click here https://www.reddit.com/r/SEO/comments/hz24d7/rebrandedmywebsitebutidontwantmyseotobe/.