Welcome to the Community, @Tim_E-Motion.
I'll share some insights to resolve this issue about a sales order closing by itself.
When you have a sales order that is not yet complete, make sure to issue a partial invoice only. Also, check if there is no other invoice attached to the Sales Order. You can verify this by creating a Transaction History Report.
Follow these steps below:
- Open the Sales Order.
- Click the Reports menu at the top.
- Select Transaction History.
It will show the Invoice attached to the Sales Order.
If everything looks good and you're still getting the same issue, I recommend doing some troubleshooting steps.
We have this diagnostic tool that combs through, repairs, and diagnoses any damage within your company file that we need to fix. Rebuilds and verifies are essential when trying to repair minor corruption. And, also aids in determining if the issue is from the file or something else.
Here's how to perform the rebuild and verify:
- From the File menu, click on Utilities.
- Select Rebuild Data.
- Go back to step 1, then choose Verify Data.
For your reference, here is an article that can further guide you on troubleshooting data damage within your file: Resolve data damage on your company file.
Let me know how it goes or if you have any other questions about sales orders by commenting below. I'm always here to help.