Hi, I'd like to ask for recommendation from all experts here in DP One of the website that I am working on is getting revamped. Currently we're using Joomla and we're going to build from scratch (CodeIgniter) for the new layout. We're changing the database from MySQL to MongoDB as well. My question is, how to keep the website SERP, mostly on Google & Yahoo, because we are currently on the first page on most of the competitive keywords in our niche. If any of you have had experience moving from Joomla to CodeIgniter, or other build from scratch web app framework, I would really appreciate if you could give any suggestions you may have. Any help would be really appreciated. Thank you in advance