Hi there, beastbasketball81.
I'll shed some light on entering previous transactions in QuickBooks Online (QBO) Solopreneur.
When you enter entries in QuickBooks, they directly affect your current balance, which means the system cannot change or ignore these modifications. The financial records are continuous; therefore, entering past transactions will also impact your financial statement balances.
Additionally, you can find instructions on how to organize your downloaded transactions in this guide for future reference: Categorize bank transactions in QuickBooks Solopreneur.
Please know that you're always welcome to post if you have any other questions about entering historical transactions. Wishing you and your business continued success.