@Diggy and Punter: Was this RFE after the fact that you guys submitted copies of past and current I-20s with the rest of the documents while filing for I-485/I-130?

Here is Punter's reply from the other thread to my question above: 
@kailoketa:-I didn't send prior to interview. I took all the i20s at interview and show it to the IO Officer ,she says ok but she needs class schedule ,so she wrote RFE for class schedule only no I 20, these IO officer has law in their mouth, whatever they say that is law .