@Linulex could you please clarify, where exactly in the Active list this "compatibilitymodus" is? It would be great if you attached a screenshot.In the active list, everything is accessible from 1 page.
In dynamic list there are a lot less options grouped together, and not always in the most logical way and some are just plain gone. For example the compatibilitymodus. Yes i still have hundreds of websites using this. I am using plesk since v 1.3 so every possible config that was once possible in a version is still in use somewhere on a server. half of my websites have a
imho: the dynamic list is an exercise of the programmers to justify there own job.