If you cancel June now, before there is any change to the policy.l.which they can do..they wil return the borrowed points.
However, if you do that and then decide to travel again, you will be limited to borrow back no more than 50% of the total contract. This is a temporary change to help with the closing and we do not know how long it will last.
If you have borrowed any other points for different reservations, they count toward the new 50% total,
The system will allow you to book and borrow more, but if you do, the reservation will be canceled
So, I would not bank yet if you think you could reschedule before the end of UY, since your banking window doesn’t end until July.
I think once they announce an opening date, the rule change for borrowed points will be stopped