I just past rank 13 or so and I have 2 custom classes to build on. I had 2 or 3 weapon unlock tokens at this point in the game and decided to unlock the 2nd assualt rifle and the feline smg. Using both my custom classes to change my loadouts with the new weapons, played a few matches with them then decided I was going to play around with the sniper rifle.

I change my assualt class to sniper, find out I svck at it so decide to go back and the rifle and it is nolonger unlocked and neither is the feline. I check out my 2nd class like wtf I am sure I had this stuff.. sure enough my 2nd class is still sporting the feline but when i get an attachment unlock and decide it would be cool to put one on the feline.. it request I rebuy it again with a weapon token to access it in the custom setup.. but i nolonger have any tokens.

So is there a limited amount of times you can change your loadout per rank?

No limit, there's bugs with the game. Try the following:

- Unlock what you want, then play a new round, complete it and leave the session.

- Then try going back to singleplayer, click multiplayer again and selecting gamesas to change the profile (so it logs you out).

- Quit the game and come back to play again.

I don't know if you have to do all of this (still testing), but when I've done it, my unlocks have saved. Finally, if you disconnect or the game crashes before doing all this, you apparently lose whatever you gained (so you have to get again).