The option to import your journal entry in a .csv file is currently unavailable. That would be a great addition to the current features that we have, so I'll take note of it. I also encourage you to leave feedback from within the product.
Here are the steps:
Go to the Gear icon and select Feedback.
Provide your product suggestion.
Click on Next to submit feedback.
You may consider adding them manually one by one or find a third-party app that works well and can integrate with QuickBooks Online that can import your .csv file.
On the Download page, selectBrowse. Note: If you need help formatting your journal entries, selectDownload a sample file.
Find and select your CSV or Excel file. SelectOpen, thenNext.
Map your information. Your Field represents the headers on your spreadsheet. From eachsmall arrow▼ icon, select the one that matches a field in QuickBooks Online.
SelectNext. If there’s an error, edit the file and try again.
SelectStart import.
SelectDone.
Kinda strange when you come in and say this doesn't exist. but not so strange when you consider that quicken is pushing a 3rd party SaaS solution that does this. Seriously what serious accounting software can say with a straight face that they can't do CSV import?? thats like having a spreadsheet program that can't do SUM.