Problem when updating my server

[zteeters]

I just updated my server? I am not much for the technical stuff.
Here is what I did and what happened,
I downloaded the new version, It came as a zip file from WinRar
I extracted it to my desk top and it ask me to replace the old files, I clicked yes. it downloaded the new version, and when I logged into my server. all my channels were gone my server name went back to
Teamspeak]I[ Server. ???

How can I prevent this from happening in the future when I have to update???? please remember I am stupid when it come to the technical stuff so please make it simple english so i can understand.

Thanks for the help..

[poisonpanik]

Make a backup copy of your database file (ts3server.sqlitedb)