Exported CSV File, but changes got deleted
Hi, we exported a CSV file of our financial statements, added some additional tabs, saved and closed the file. When we re-opened the file, the financial statements and other tabs got deleted, except for one (which had our notes to our accounts) - the tab was renamed to the name of the file. We don't know what happened! Could you tell us how we can recover the file that we updated (there are no previous versions or unsaved versions that we can find). Also, why does this happen, and can we avoid it in the future? Thanks!