Hi there, fmfrance.

Glad you've come to reach out to us here in the Community. I'll help you with splitting the amounts with different accounts in QuickBooks Desktop.

Beforehand, can you send me a screenshot showing the menu option at the bottom of the check? Additional information is much appreciated.

In the meantime, you can use the expense tab to split the amounts for different accounts in the write checks screen.

If the issue persists, you'll want to ensure your QBDT software is updated to the latest release. This way, we can guarantee the program is running with the newest fixes and patches.  

After that, you can follow the steps below to verify and rebuild your data.

To Verify Data:

1. Click Window at the top menu bar, then Close All.
2. From the File menu, choose Utilities.
3. Tap Verify Data.

To Rebuild Data:

1. Click Window at the top menu bar, then Close All.
2. From the File menu, choose Utilities.
3. Hit Rebuild Data.
4. You will receive a warning message to back up your company file, press OK.
5. Click OK when you get the message "Rebuild has completed".
6. Close and re-open QuickBooks Desktop.

Additionally, I've added this article to learn more about the online banking features in QuickBooks Desktop:

• Get started with Bank Feeds for QuickBooks Desktop.
• Add and match Bank Feed transactions in QuickBooks Desktop

Please let me know if there's anything else you need or concerns about splitting the amount in QBDT. You can drop a comment below, and I'll gladly help.