Steps to recreate:
- Generate a flight plan with the A21N, any variant will work.
- After flight is generated, go to “Performance and Tools.”
- Click “Populate from Last Flight”
You will observe SimBrief incorrectly fill in your performance data as an A321, not an A21N as to be expected. I’m not sure if there are more aircraft that have this bug, but I thought I would report it as soon as I stumbled upon it, should be a rather quick fix.