I am using Nextgen Gallery 1.9.7 and want to upgrade to 2. How do I do this? There is no option/link within WordPress to upgrade the plugin and having downloaded and unziped the plugin I see that the directory structure, etc, has changed since 1.9 so it won't overwrite all the old plugin files.
I have searched the documentation but it is out of date and even the 2.0 documentation is actually for 1.9 and I can't find anywhere that detailed how to go from 1.9 to 2. I must be missing something because clearly lots of people have performed this upgrade but I just can't see what to do.
Should I just upload the contents of the Zip file to the nextgen-gallery directory? And should I clear down the existing contents first?