I've created a website for a client, they said they didnt't care that SEO would be affected so I decided to create a completely new website with a different structure than their old website.
They said that they had no traffic to their website anyways, but they are ranking first for their company name(a pretty unique name).
Their old website had 3 pages that I basicly merged into a one page website and uploaded with a different domain name. This website isn't ranking very well yet however it was just uploaded 2 days ago.
Can I redirect the entire old website to the new one and keep their SEO ranking or will it be penalized after doing so?