When creating a sets of accounts, you’ll have the option to base it on an existing set of accounts.

When you choose to base on an existing set of accounts

• This option is for clients who don't have a bookkeeping application like Sage Accounting
• You won’t be able to populate the Trial Balance from Sage Accounting
• This option calculates the brought forward Nominal Account balances based on the comparative period data
  
• The current period Trial Balance is set up so that the starting position of the period matches the closing balances of the previous accounting period

When you don’t base on an existing set of accounts

• This option is for clients who are using a bookkeeping application like Sage Accounting where the Trial Balance is fully up to date
• You'll be able to populate the Trial Balance from Sage Accounting or import via a CSV file
• The current period Trial Balance will be empty and ready for you to populate