Thanks for sharing your concern with us, @dan543.
I'd suggest using an importer tool to upload your timesheets into QuickBooks Online. QuickBooks supports various third-party applications for any functionality you may need. To see if there's an app that can help you accomplish this, head to the Intuit App Center. Then, type a keyword in the search bar.
You can follow these steps:
- On the left panel, click Apps.
- Go to the Find Apps tab.
- Use the search bar to look for an app.

Refer to these articles for more info:
Lastly, I'd like to let you know that our developers are constantly uncovering and considering new ways to improve the program. To be updated with our latest news and enhancements, you can visit our QuickBooks Online Blog.
Stay in touch if you have any other questions or concerns. I’ll be right here to answer them for you. Enjoy the rest of the day.