Is there a definitive way to upgrade Magento while keeping all order data, sales data, ect?
After setting up a staging environment and ensuring all extensions, ect. are working properly there will inevitably be orders placed, orders processed, ect. Is there a proper way to sync the data with the production installation?
An alternative way I've read about is to set up a staging area and essentially practice the upgrade while taking notes on all the fixes that need to be completed. Then put the site into maintenance mode and do the upgrade on in the production environment. Is this a viable solution?
Any insight is appreciated.