I have a long existing shop and it is still in V1.4. I want to upgrade it to the latest version of Prestashop. Could anyone give me advise what is the best way to do the upgrading in my case? I have lots of products and sales records in my shop and I don't want to lost them. And also, the version 1.7 is coming soon and should I wait for 1.7 for just go ahead with 1.6?
My shop is here https://www.lovestation.com.au. If someone could help me with this upgrading, I am willing to pay some money (but not too much! ).
Thank you all!