I'll help with your question about managing invoices.
We're unable to merge invoices or any other types of transactions in QuickBooks Online. You can edit the first invoice and add the details from the second one. Then, delete the second invoice so it will not become a duplicate.
Here's how:
Go to the Sales menu and proceed to the Invoices tab.
Look for the invoice and click on it.
Select Edit invoice in the lower-right hand corner.
Add the products or service items from the second invoice.
Hope you’re doing great. I wanted to see how everything is going about editing and sending a single single. Was it resolved? Do you need any additional help or clarification? If you do, just let me know. I’d be happy to help you at anytime.
Looking forward to your reply. Have a pleasant day ahead!
Thinking of building an app that merges invoices into one. If you have a project with many resources using T Sheets (QuickBooks Time) there is no workflow that allows sending one invoice. If you have 10 resources on the project then you have to send 10 invoices to the client. 10!
Thanks for dropping by in the Community Space, Sarah-Zee and Billyinvoice.
I can see how convenient it is to merge invoices or any other types of transactions in QuickBooks Online (QBO). Please know that due to high volumes of feature requests. Our product engineers might still not have reviewed your feedback.
Thus, I recommend sending your feedback or suggestions again to our product engineers. This way, they can further review your request and might consider adding it to our future product updates.