Adding prior transactions

Is there a way you can add prior transactions for multiple dates instead of entering the transaction for every prior month. Example, I need to add paid rent, “income” for the first of the month for the prior months, before I set up my Stessa account. It would be great if you could change the bar graph to change rent received for the prior months, before I set up Stessa this year, since I need to file taxes for last year’s earning.