Thanks Ayushi and Aditya, well spoted.
Indeed, I missed to look in other files than Java, hence the misses.
Ayushi, in your patch you have duplicates. Maybe because you followed the way I suggest to use Eclipse in the "Eclipse tips" wiki page. Your duplicates were not a problem, I used only the ones which starts with "plugins". I found another instance in UserEvents.xml, there are no others in any files.
Ayushi your modified patch (I also refactored things a bit) is in trunk at revision: 1806332, no branches are concerned.
OK, I got an issue I must report. Long story short: in Eclipse I was initially able to change the 2 plugins files in ofbiz/plugins (project) and able to commit them with UserEvents.xml selecting the 3 files in the Eclipse search view. But then it was refused by svn because my plugins svn instance was not up to date. I stupidily updated out of Eclipse (using TortoiseSvn, I'm too much used to it) and after that, though trying hard, I did not find a way to commit the 3 files in the same commit. Before giving up, in the Eclipse search view I was able to select UserEvents.xml and ScrumEvents.xml but not QuickAnonCustomerEvents.xml, Subclipse knows why :/. Once again TortoiseSvn saved my ass and I was able to commit the 3 files in the same commit usint it, lesson learned (the hard way).