Hi there twoheartsrnr-gma,
Making sure that your transactions are all entered correctly is important to make sure that your books are balanced. QuickBooks Online gives you the option to import certain lists as well as transactions in order to make the process of data entry easier. I can provide some assistance with this.
When it comes to importing previous transactions, there are 4 types of transactions that can be imported: Bank Transactions, Invoices, Bills and Journal Entries. You can import them all from either a .csv file or an Excel file. You can do so by navigating to the Gear icon, then Import Data. You can browse your computer to find the file and select to import it.
Here are some articles that go over each transaction type and the process to import them:
Upload bank transactions to QuickBooks Online
Import bills into QuickBooks Online
Import invoices into QuickBooks Online
Import journal entries into QuickBooks Online
If you have any other questions, feel free to reach out here.
