Question about Outlook Express

Dear Team,

Many times I lose the updated information from my Excel file which is located in my SkyDrive and share it with my laptop, I surprise after the synchronization that information didn’t update in my SkyDrive file and instead of that the sync process deleted the updated information from my laptop !!!

I do not trust to work save with SkyDrive since it is cost me a lot of time and efforts!

Please help me to restore the important information

I  just installed the SkyDrive desktopp app, and I want to be sure of something.

I tagged one file desktop file for synchronization.  Now there are two copies of the file on my hard drive: one in the original location and one in a folder called SkyDrive.

My question is whether I must now work in the SkyDrive folder in order for the file to be synchronized.  And what happens with the original file; does it have any bearing on the synchronization process?  I.e., would it matter to the SkyDrive app if I delete it?

Thanks for your help.