Hi folks I built a new amazing aggregation project which will absolutely crush the competition, help my clients to live a better life and pay me millions of $$$. At the moment I have around 30,000 pages indexed. Now I decided to make a major change in the URL structure. This will affect around 10% = 3,000 pages. They will get a new URL. My plan is to make a 301 redirect from the old URL to the new URL. Once the new URL is indexed and ranking I will probably just delete the 301 some time later because there are no backlinks or internal links going to the old URL. So ideally google will just deal with the new URL and forget about the old URL eventually. My question is if I might get penalized or get any manual action for changing thousands of URLs at once because my site is still so new? I am aware that it will take some time to recover the ranking. I am fine with that but I am really interesting if I might get into some other trouble here. Thanks for your advice.