Thanks @crownan for linking that similar thread discussion.
Would the result be less accurate as a result of running the AI at a different time? Not at all! AI FTP Detection will account for either that rest week, or lack of rest, and provide the best result for that time; as a result of the work you have done.
I’ll reiterate what was advised in the AI FTP + Rest week thread:
Don’t forget that your FTP is just that: your functional threshold power, meaning: what can be expressed *right now. This is where Progression Levels and Adaptive Training as a whole really shine. Don’t stress about that rest week.
Dropping knowledge. 