I'm getting conflicting information from MP CSRs.
I wonder if anyone here has more definite information.

If I book an *A award ticket, and I later want to change the return date (before taking the outbound flight), what's the latest return date I can change to?

1. Award issue date + 330 days
2. Award issue date + 1 year
3. Change date + 330 days
4. Change date + 1 year
5. None of the above?

Thanks!