Hi, My spouse who recently became US citizen wants to have her parents permanently stay here in US with us. They're currently here on B1/B2 visa and have a flight back on AUG 7th. For them to do a quick status adjustment, do they have to file just I-485 since their daughter is US citizen now, or do they have to file any other docs, because in my USCIS I don't see file I-485 but I see I-539, so I am a little bit confused about that.