Disney has not been cancelling resort reservations 7 days before check-in, the website says "If no action is taken by you before your check-in date for arrivals during the closure period, Disney will automatically cancel your reservation within 7 days of the original check-in date and process any refund due on the original form of payment." To date, that has meant after your check-in date, not before.
Reservations still show as normal / in tact until mid-way through your check-in date, then they disappear from
MDE. Several days later the refund should show up on your original form of payment, although the exact timing of any refund is always variable and more dependent on your credit card than Disney.
I've had more resort reservations over this closure period than I should admit and the same thing happens every time. The reservation shows up until mid-way through the check-in date, 3-5 days later I get notice from my credit card that a refund has posted - which to me suggests Disney probably processed the cancellation/refund on my check-in day based on my past timing experiences.
Hope that helps.