It is quite difficult to sort this out in your active account, you would have to enter all your paper account data into quickfile for the current financial year (depending on how long you have entered invoices and vat submission in quickfile). I would backup my data, clear the account and start from scratch with opening/trial balances from your paper accounts. You could implement the old data but I would just keep it in case the tax man ask for this. And if your end of year date is coming very soon I would even wait until that date and start new with the new financial year.
This method has the advantage that you can keep your settings.
If you want to keep all that data in quickfile you could also open a new quickfile account.
May this is helpful: