回复：回复：Thank 863211 for answer my question. The problem is

we didn't get a new I-94, when we used the AP last time before AP expired.
-When you left US, you need to provide the old I-94 to the ailines/CBP. Then, you came back to US using AP, you were supposed to get a new I-94 (normaaly, you fill the I-94 in the airplane and proived it to the CBP officer, and then the Officer endores it). How did say you did not get the new I-94?

(I don't know we can get another one even I-94 still valid).
-You said you did not get a new I-94, how did you say the I-94 is still valid?