Step 1: Log into Ditto here
Step 2: Select 'Royalties'
Step 3: Scroll down and select 'Export' from the drop down
Step 4: Select 'Date Range' and then 'Custom Date Range'
Step 5: Pick a starting date range that is prior to the date of your first release and select Apply.
Step 6: An email will be sent to the email associated with your Ditto account. Use that file for upload to Mogul.