Backup: Creates a second copy of your company data in a .CAB compressed file.  

• The information in this folder is a snapshot of your company's records up to the day on which the backup copy was made
• Any changes made to your company after the backup are not reflected in the backup copy
• You can, of course, create backup copies of your company as often as you want. The only limit is the amount of storage space you have available
• Access it by clicking File, Backup
• It will create one cab file
• Need to run restore to regenerate the .sai file and .saj folder of the data file. (See Related Resources for more information how to restore)
  

Save As: Closes your original file and opens a newly-created mirror copy.  

• You can use this command to quickly create a copy of your data
• Access it by clicking File, Save As
• Save data by a different file name in the same location or by the same file name in a different location
• You will see both the .sai file .saj folder of the new data file created
• New data file will be opened immediately
   

Save as Copy: Keeps your original file open while Sage 50 Accounting creates a copy.

• Access it by clicking File, Save a Copy
• Save data by a different file name in the same location or by the same file name in a different location
• User will see both the .sai file .saj folder of the new data file created
• New data file will NOT be opened immediately
• The current data file is still opened