Ported EB3 to EB2 but EB3 become current not EB2

[SMikekan]

 

I have ported from EB3 to EB2 with the same employer.  if EB3 become current and EB2 is not, can i apply 485 based on EB3 dates?

if not what other option i have to apply 485. 

Thank you in advance for your advise