Thank you for all your comments and suggestions. Your contribution is very much appreciated.
With regard to your question, since 2.0 is not officially released for live stores, and strictly for development, we do not suggest upgrading as yet. However, if you still want to try, you should back-up your site first as you may lose all changes which have already been made.
Also, what would help in your situation is to read the changelog here; https://github.com/tastyigniter/TastyIgniter/blob/master/CHANGELOG.md
This is not comprehensive, but will give you an idea of what has been changed.