When you FILE (MONEYDANCE on Mac) – RESTORE FROM BACKUP you do not overwrite your existing data set, a new data set is created with the naming convention – from manual backup yourdatasetname-yyyymmdd-tttt.moneydance the date time code taken from the backup file - from auto backup yourdatasetname (plus at number) e.g. yourdatasetname 2.moneydance The default data set location can be found under HELP (MONEYDANCE on Mac) – SHOW DOCUMENT FOLDER. You can delete old data sets you no longer want. You can rename a restored data set with Moneydance closed as you would any other folder provided you retain “.moneydance” extension. A data set is a folder not a file containing other folders and files. When you open Moneydance it will open in the “Welcome to Moneydance” window with the data set name listed on the right.