I have a situation where , my H4 expiry date is Sep 31st 2013 . And my H1b is in process.And my husbands company want to file for his H1b extension. Advice me what to do now? Im not clear on the USCIS " Last action rule" here. Im worried that i should not be back to my H4 status as on Oct 1 st 2013. Since both will be valid from Oct 1st 2013. Please advice.