You came to the right place for help with removing the attachments on journal entries, @jseo1.

I can definitely provide the steps for you to follow. When you add some attachments to transactions, you can still remove it by clicking the little X icon beside the file name. This is regardless if the journal entry is already saved or copied. See this:

You can also delete it from the Attachments page. To do that, perform the steps below:

1. Tap the Gear icon and select Attachments.
2. Find the file you want to delete then click the drop-down beside Download.
   
3. Click Yes to remove it from all linked transactions.
   

If you still can't delete it, open a private browser. Unexpected issues in QuickBooks can sometimes be affected by the amount of data stored in the cache. This is because a regular browser will constantly overwrite the data and will not remove history unless done manually.

Private browsing will not save any history, so it's a great place to identify issues in the browser. Use these keyboard shortcuts to launch a new private window:

• Google Chrome: press Ctrl + Shift + N  
• Mozilla Firefox: press Ctrl + Shift + P
• Safari: press Command + Shift + N

Once done, delete the attachments again and see if it works. If it does, clear the cache to resolve browser issues in QBO. Using a different browser can also help.

I'm adding some related links and program tutorials to help you:

• Attachments in QuickBooks Online
• Create a journal entry in QuickBooks Online
• QuickBooks Online - Video tutorials (QuickBooks Australia)

For other concerns about attachments, please post here again so I can help you. I'm more than happy to share some more insights with you. All the best!