I could confirm it. I tried it yesterday night and then I checked in Myjio app many a time while the download was in progress, the 1 GB data cap didn't change at all. But tbh that is the shittiest time to download. I mean who'd wake up till 2 AM to download plus that's only upto 5 AM? It should have been at least 2 AM to 8 AM or 12 AM to 6 AM.