Why my data it's lost

[famousfame]

Just now before Emergency Mentenance i'm in dungeon quest and GM have anounced
Emergency Mentenance and me disconnect from Server I waiting 30 minutes
I'm loging in to server I see my data before disconnect are lost exp, item , item quest , Skill EXP and others . As if has Playback my data plese tell me about this problem
please.

[Shinji]

they said to pls log out early incase of character data lost, learn to pay attention