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Since upgrade of i18n 1.6, it seems not support the menu item Translate and Localize.
"Translate and Localize. Menu items with language will allow translations. Menu items without language will be localized. "
Related issue in i18n is, and it seems will never be fixed.
So here is the patch who have changed the translate method from menu item to multi menus with different fixed language.
The patch will let superfish to choose the right menu to display.