updated theme - stranges translation strings (corporate, fun at least testing others)

Hiya !

Updatingall my thmes, I noticed that (bp corporate, fun and others) :

first the language files have totally changed I must retranslate all

well not the problem.

For example in corporate, string 1386 there is

Sorry, we can\\'t find the category you\\'re looking for at this URL. Please try selecting a menu item from above or to the side of this message to get where you\\'d like to go.

with the 2 \\

is it normal ? In tne translation must I use the same syntaxe keeping \\ ?

BUT

If I do un update from source, the SAME strings are added but WITHOUT \\ :

Sorry, we can't find the category you're looking for at this URL. Please try selecting a menu item from above or to the side of this message to get where you'd like to go. and it comes as string 857.

And the before 1386 string goes to 2343

Sorry, we can\\'t find the category you\\'re looking for at this URL. Please try selecting a menu item from above or to the side of this message to get where you\\'d like to go.

Oo

Im am a bit confused....

What must I do ?? Keep the default .po and use it as is, or update from source ?

using the en_EN.po (before named default.po)