Thanks for joining this conversation, @Funkeinc.

As long as the invoices that were created have a zero total amount, you don't need to worry about them. This will also clear your unbilled activities in QuickBooks Online (QBO).

You may also check out the article shared by my colleague above for future reference.

For tips and other resources, I recommend visiting our website for reference: Self-help articles.

Reach out to me in the comment section below if you have any additional concerns. I'll be happy to help. Have a good one!