Workout Goal changed within 3 hrs. Don't understand why

Can someone help me understand the following? I understand I’m slightly more recovered 3 hrs later but this seems a bit odd to make such a radical recommendation change in such a short span of time.

At 9am this morning, I had a 4 XSS Surplus and my Workout Goal was an optional 40 XSS recovery day. I selected an Active Recovery 60 workout to do later today
XERT Recovery

At 12pm I went back into the system and while XSS Surplus is still 4, my Workout Goal has now changed to Endurance with 136 XSS optional workout.
XERT Endurance

Check your Expired Activites (Table) and that your planned Active Recovery 60 wasn’t mistakenly set before 12pm.