completed Masters in F1. Converted to H4. Got my OPT now. How to convert back to F1.

[radhaVaddi]

I Came here on H4. And then, converted to F1 and completed my Masters. In the End of my Masters applied for OPT.  Before it got approved, I went to INDIA and came back to USA with H4 stamping. Now, i got my OPT approved. 

Now, should I need to convert back to F1 to use my OPT.  If yes, can you please let me know the process?

[rahul412]

I guess that OPT is gone.

Just curious, why didn't you attended F1 interview??