I see what you're saying. I want to make sure I explain the attachment function fully.
When you create an expense, for instance, and you add an attachment to this expense, it will only be attached to this single transaction. If a duplicate expense is created by mistake, the attachment won't be added a second time automatically. It sounds like you're deleting the duplicate copy that had the attachment linked to it, which would mean the attachment isn't linked to the remaining transaction. Wherever you upload the attachment, that's where it will stay. There's no feature in QuickBooks Online that allows you to see all your attachments without the transaction, nor is there a feature to let you 'sort' through your transactions this way.
I can appreciate that in your case this may be helpful, so I'd be happy to pass along this feedback to our software development team. We appreciate all customer feedback and suggestions.
If you have any other questions about the attachments feature, please let me know.
Have a great day!
