There is no automated process, so the steps you will need to do in the new database are: - create the chart of accounts - suggest you export from instance 1 and import to instance 2 so ids etc the same - export and import products - export and import customers - create the opening journal entry - relatively straight forward apart from debtors/creditors assuming you want these at an invoice level. For these you will need to either journal in separately or create the invoices & then reverse the created GL entries

Frankly, the real answer is not to do this - i,e, why are you trying to do something that adds no business value. All the data is reportable by fiscal year so I can't see any benefit.

Anyway, good luck