Thanks for bring this to our attention, LYLCStudio. Let me join in on the thread and provide insight that might help us fix the issue.

Here are the few reasons why we have display issues when importing invoice templates:

• Overlapping tables from the imported file.
• Incorrect mapping of the fields.
• Piled-up cache files on the browser.

The first and second reasons are crashed out since you've successully imported the file. We can do browser troubleshooting steps to get rid of any cache-related issues.

You can use a private browser because it doesn't store cache files. Then, import the file again.

Using a different supported browser can be a good alternative, too. 

If the display issues are fixed, we can go back to your regular browser and clear the cache storage.

Otherwise, I'd suggest contact us so we can further investigate this. You can visit this link to get our contact information: QuickBooks Customer Care Team.

I'll be right here if you need anything.