Our site has the v1.2.3 of the plugin installed. The reason it is out-of-date is because the developer helping on the site has been customizing the plugin to be able to handle unique things of our business. We would like to be able to maintain updates as they happen from WPMU while also maintaining custom changes. While it appears there is no way to make a child plugin like in themes, what do you recommend is the best way to handle these situations? Our developer is very hesitant in doing the update to 1.2.8, as am I, but we would like the new features that the updates bring as they include some things we were going to develop custom for our site anyway.
I appreciate the help.