I am working on H4 EAD valid till July 2021. My employer applied for H1-B with change of status and got the approval notice today. I am planning to go to India in June and return back in July. While I am in India I have to do a dropbox to get my H4 visa stamped in the passport. Will I be able to travel back in H4 and still maintain COS to H1B in October?