Direct css file edition instead of style manager

[solarweb]

Hello,

I?ve modified the css file directly instead of use the style manager in the admin panel.

Everytime i modify any template the css file is overwrite... how can i set the system to mantain my css file applied to a custom style?

Thank you very much for your support!

--------------- Added [DATE]1300206066[/DATE] at [TIME]1300206066[/TIME] ---------------

I?ve seen in the code this

@import url("clientscript/vbulletin_css/style-07c30450-00002.css");

How could i avoid it?