We appreciate you for joining this thread, BRC.
Yes, you're correct the 3 part printing was once available last year. However, this has been temporarily removed when the IRS requires QuickBooks to use the 4 part printing. As what my colleague mentioned, our engineers are already working on implementing this feature soon.
We'll also be updating this thread once we receive updates from our product engineers.
Feel free to visit us again for any questions. It would be my pleasure to help.