Thanks for coming back, nicole_lahti. I'm here to help you fix the issue.

The creation of a purchase order shouldn't affect your ledger since it's a non-posting transaction. 

Let's check if it's a data issue by running the Verify Data Utility tool. This helps resolve unexpected behavior like this.

Here's how:

1. Click on File.
2. Select Utilities and choose Verify Data.
3. When prompted with the error, go to Rebuild Now.

Or you can do the following to rebuild your data:

1. Choose File.
2. Go to Utilities.
3. Click Rebuild Data.

For more detailed instructions, I'd recommend checking this article: Resolve data damage on your company file.

Keep me posted for additional info after performing the steps or any other concerns. I'd be more than happy to help.