Is it mandatory to maintain non-immigrant status (H1B) until the I-485 application is approved (a green card is issued)? I am not sure whether USCIS will send an RFE and/or call for an interview when my PD becomes current.
Yes, you SHOULD maintain H-1 or L-1 status while I-485 is pending, because these days, especially the government can create odd problems with your I-485. FAQ in detail...
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