Hello, we did a http-refresh, with redirect to the new website-s address, showing a nice message like "you will be redirected to our new website in... x seconds". Now we see that the site disappeared completely although it was ranking well, on the first page for many words. Do you experienced such a drastic behavior from Google? We thought that avoiding a hard 301 redirect will save the SERps of this old site for some moths at least ... Waiting for you to share your experience on this, Thanks!