Zo, i think that if you go back to X1 and in Edit, Preferences, and File, and in Folder Location, look at the line that says Plug-In layout, write down which folder that is.
Then go to X3, do the same thing and change the line in Plug-In Layout to mimic what is in X1, then you will get your renamed plugins back.
Most of the time, just change X1 to X3 will do the trick.
I think that this is what you are referring to. Isn't it? If it is not, then I am sorry.
dan