i18n Plugin with GetSimple CE

[DC88]

You could apply the patch directly to your existing install (https://getsimplecms-ce.github.io/download.html)
And then update the plugins  with the latest CE plugins (https://getsimplecms-ce-plugins.github.io/)

Of course, backup everything before, just in case. But it should work fine.

Thanks Islander. I tried all possible methods. 1. I tried a new CE install + copy data and theme folderes over. 2. Applied the patch to GS 3.3.16, then updated the plugins. Still both would mess up my navigation structure. I did notice that only nav menus that have 2 sub menus would get messed up, so for instance, menu 1 would get messed while menu 2 won't.

Menu 1 
+Menu 1 sub menu
++Menu 1 sub sub menu

Menu 2
+Menu 2 sub menu