Fields and lang_en.php problem

I have having a problem with my dolphin website.

Everytime i change one field on the user profile in the back end(profile field builder), it changes my lang_en.php file automatically  and reset it to the default file that come with boonex,which show Copyright © 2010 Your company.Is there a way i can stop that from happening,i don't know if it is a cache problem.

And when it does happen how do you fix it?

Reason i ask is becuse if your following proper procedures to create a language file than this should not happen. So it would be helpful to us to know how you are doing it.

I just go and edit the lang file and upload it via  ftp.

Do you import the language file in admin->Settings->Languages Settings. If not then that is the reason it's happening.

Each time the languages get recompiled it replaces your language file with what is stored in the database.

The proper procedure is create a proper language file to be used for import into the database.

Thanks for the help,will try that out.