Same Employer - Eb3 to Eb2 and back to Eb3

[4real]

Please assist me with the below query.
Situation: SAME Employer - Filed EB3 with PD Aug 2010. Upgraded to EB2 in 2016 and retained the PD.
Query: I’m debating if I need to file my 485 in EB3 or EB2 category since Dates For Filing is current for both the categories.
Scenario 1: If I file my 485 in EB2 and in future if EB3 Finals Action Dates become current then - Can I file 485 in EB3?
Scenario 2: If I file my 485 in EB3 and in future if EB2 FInal Action Date becomes current then can I file my 485 in EB2.

In general, am I even eligible to file my 485 in EB3 since I have already upgraded to EB2 in 2016.

Appreciate if you could bring some clarity to the sitiuation.

Thanks

[gprx]

I believe if you have both approved, you can use either. Check with professional lawyer for confirmation.