I have made a big mistake recently with a site which has been online for 6+ years and has done many things before to get a high page rank. The site was on many first pages on several keywords.
The site was recently redesigned and redeveloped but the problem is that robots.txt was once setup to disallow everything but was not put back correctly after the site has launched.
This went on for a few weeks before it was noticed and has been corrected immediately but the damage seemed to be have done already as the site is no longer on the first page (or any other immediate page) and showing very bad scores and page ranks with online SEO tests.
Is there any way we can 'roll back' to before the robots.txt mistake or is it really starting from scratch again ?
Thanks in advance!