As of now, we're unable to turn the online payment method field on when importing a CSV file for invoices. You'll want to consider looking for a third party app that can modify the field of payment as Fiat Lux suggested. Here's how.
In your QuickBooks Online (QBO) account:
- Go to the Apps menu.
- Type the name of the third-party app or click Browse.
Rest assured I'll submit this feature request on your behalf to our product engineers so they'll consider adding this in the future.
In the meantime, I encourage checking our QuickBooks Blog page to be updated on the latest news and updates in QBO.
Also, here's an article you can read for additional guidance about importing data to QBO: Common questions about importing data to QuickBooks Online.
Then case you want to learn some tips on managing your income, check our Income and expenses page for reference.
You can always get back to us whenever you need help. I'd be glad to help anytime.