Hi All, I previously had a H1B visa and later converted to H4 and now in H1B . My most recent visa was for H1B. Now if I go to India, Am I eligible for drop box ?

I see the first question for dropbox eligibility is "I have a previous U.S. visa in the same class as the visa for which I wish to apply" .

I do have a previous H1B visa in my passport but my most recent visa was H4 and now I am in H1B. Am I still eligible for dropbox?‚Äč