L2 extension I-539 withdrawal

[khandu0712]

Hello, I had applied for L2 extension with USCIS in June2020 which is pending for decision. While this application was pending, I visited consulate in India and got F1 visa since i will be attending university. I had sent a withdrawal letter for pending I-539 a month ago but the online status is showing " your fingerprints were taken on ...." so basically it is still under process. I will be coming back to US next week. I have following questions if you can help.

1. Is it possible that USCIS continue to process my pending L2 extension? How can i make sure that it is withdrawn before making decision?
2. In worst case if they process and approve L2 extension after i enter on F1, will my status change to L2 again? and if yes what i have to do to change back to F1 with having valid visa?

Your responses are much appreciated.

[Corkery]

As per USCIS, which is from the conference call they hosted, they typically would take about 17 days on average to complete the I-539 biometric process from the day they receive the I-539 application(assuming no re-schedules).