currenex, buy and sell gone
Excuse me, Currenex ?. Perhaps you should ask http://www.currenex.com/ or ask your broker.
What is your broker anyway ?
This forum is for MetaTrader 5 Trading Platform and MQL5 language program.
Either in MQL5/Script folder where you install the MetaTrader 5, or just open MetaEditor 5 > click 'File' Menu > click 'Open Data Folder'.
I have no idea how did you lose your script.
1. What did you do before you realize that your scrips is gone ?, That may not important, but may give a clue to where it's gone.
2. I never try this - try to run System Restore if you desperate for your script, who knows your System Restore may have a copies of your script. However BEFORE you run System Restore, try to run System File Checker first (SFC), just to make sure that your system file still intact (SFC: click here for XP, click here for Vista/7) and always RESTART after running SFC. Move your current script file elsewhere (say to desktop) so that System Restore will restore your script to script folder - if there's any. Then run your selected System Restore.
Call who ? MetaQuotes or Currenex ?, There's a link for MetaQuotes at the bottom of this page, however they probably can't help anyway. Also it's better to use Service Desk in your profile page rather using phone.
Do you think it gets deleted ? try to search for recovery software at Google and www.download.com.