Invoices

It's nice to see you posting in the Community forum, @MaryG0.

Yes, invoices created in different invoicing programs should be entered so that QuickBooks Online (an accounting program) can track them.

To do this, you can manually import the invoices or link the invoicing software. Let me guide you how:

To import invoices into QuickBooks Online (QBO):

1. Go to gear icon at the top.
2. Select Import data.
3. Choose Invoices.
4. (Optional) Select the checkbox to add new customers that don't already exist in QuickBooks.
5. Select Browse and then find and select the spreadsheet of your invoices.
6. Select Next and follow the onscreen instructions.

To look for an app and link it to QBO, here's how:

1. On your QBO account, click Apps in the left menu. 
2. Go to the Finds Apps tab.
3. In the search tab, type in the app you're looking for.

For future reference, check out this article to learn how to receive invoice payments in QuickBooks Online. 

Additionally, I'm attaching our Community link if you need help adding, organizing, and sending invoices: Invoices and payments.

It's nice working with you, @MaryG0. Please know that I'm just a reply away if you need any further assistance managing transactions in QBO.