I just upgraded to the version 2.3, it works great. I just have a quick question:
According to the instruction, I have to delete all the old files (I just renamed it), and uploaded the new ones, then run the upgrade.php. However if I do that, I will loose all the plug-ins, themes, etc. For my upgraded, I had to re-applied all the plug-ins, themes, etc.
So what's the best way to do so?