Does anyone know how rollover nights work when you have received status through a credit card? The credit card I use was cancelled after I enjoyed Diamond for 5 years despite only ~30 nights/year. When it was cancelled, they gave us status through March 21. Including 2018 rollover nights, I had 56 nights in 2019, and now my rollover nights are zero, but I am still diamond thanks to the credit card.

I was working under the assumption that my 2019 nights would be rolled over to help me keep status in 2021.