回複：H4 to H1, emgency,

You need to show (and send the copy) of your previous H1-I797 to USCIS, if all these status are since you last entry. So, If you came as F1 and never left USA till now, you even need to give F1 documents to USCIS.

But don't worry, old H1 approval notice does not have when you laid off or quit.