Sometimes changing things in game doesn't translate to changing them in your BE folder where the keymapping is stored.
Going into your battlegroundeurope folder and look for the file "CH," this contains all of the key mapping you did in game. Use notepad to open the file, not word, I used word and it opened it like a pita which was a nightmare to read. Once you have found the key map you want, copy and save it first somewhere, then delete it, go back into game and re-keymap and see if that works.
Hope it works.