Open your Media folder icon > You should have choices of Media Card or Device Memory.
If the current ringtones you wish to move are in the Device Memory now, navigate to Device Memory > Home > user > ringtones (that is the path on my BB, yours could be different). Highlight the tone and press Menu > Move and navigate then to the Media Card to the proper folder named Ringtones in which you will place the ringtone. Do the same again with the other ringtones.
Does that not work?