We know that the $250 credit resets on card anniversary date, which is the date the original card was signed up for (not upgrade date).

But my Aspire card was upgraded from the free Hilton card that was converted from Citi Hilton. So it was Citi Hilton -> AMEX free Hilton -> Aspire. Should I expect a new credit based on the date I signed up for the Citi card or the date it converted to AMEX? I don’t see any way to see how much credit I have left online.