Hello jonathan-c3darla,
Welcome to Community! At this time, the option to import timesheets in QuickBooks Online, is unavailable. However, you can review third party apps that can help you achieve this goal.
While I'm unable to recommend an app, you can go to our Apps page and explore our supported applications. Here's how:
1. Go to Apps and select Find apps
2. Search for a keyword in the search bar and press Enter
3. Select an app and click Get app now to integrate.
I can understand the time saving benefit of being able to import timecard data, and recommend submitting a suggestion to our Development Team. Recommendations are greatly appreciated in assisting us with improving your overall customer experience with QuickBooks Online.
If you have any other questions, feel free to reach back out. We would be glad to help!