As you already know since other users were quick to explain, you can save your fights to your profile. Nevertheless this was not a server glitch. The problem you experienced was a connection loss. As everyone can tell, this has become somewhat a severe issue during the past few weeks, which we are still trying to unravel:
Our hardware is working perfectly and most users claim that so is theirs. This leaves two areas for us, that probably harbor the cause - the internet connection from the user to us, or - much more likely - the latest versions of Adobe Flash.
For some reason that our IT department is still trying to compensate for, the latest Flash versions use a lot more connections than before. This seems to be the reason for the software to become unstable.
Even though I have to decline compensation for your losses in that battle citing our rules and terms & conditions, I assure you, that we are trying the best we can to come up with a solution for the stability issue.