Advance Parole

Back in January 2018 I filed I-131 form to get an AP. In March 2018 I got the AP paper (I-512L) from USCIS in the mail. There was only one copy of AP in the mail. At that time I didn't know that there should be 2 copies of AP, so I assumed that everything is fine and I will be able to travel. The paper said that AP is valid for multiple reentries until March 2019 (basically for 1 year from the date of approval). In June I was going back from an international trip and was entering US in SEA airport. The officer asked me why I have only one original copy of AP and I said that that is all that USCIS sent me. He said that they will have to keep that original copy for records. I notified him that this is only one copy that I have and that I'm expected to have another upcoming international trip. He said that he can not do anything other than make a paper copy of the AP in place, but he said that I will not be eligible to enter US with that paper copy. After that he let me go. So right now I'm in US on advanced parole status waiting for my AOS approval but i don't have any paper that will allow me to enter US next time. The upcoming trip should be in a week and I'm not sure what to do. I feel like I will have to cancel the trip. Do I have any other options?