Thanks for joining this conversation, @mrafael.
Yes, you're right. Removing or closing the unbilled expense in QuickBooks will not affect the data from the prior period. To do it, you can follow the steps shared by my colleagues above.
For tips and other resources, I highly suggest visiting our website for our reference: Self-help articles.
Reach out to me in the comment below if you have any other questions or concerns, and I'll get back to you right away. I'm always here to help. Have a great day!