Dear Mr. Pjiang:
I found something on the web site of USCIS.
http://www.uscis.gov/files/pressrelease/PeriodsofAdm120506.pdf
Clarifies that H-1B aliens, who qualify under American Competitiveness in the Twenty-First Century Act of 2000 (AC21) (Pub.L.106-313) section 106(a) and (c), need not be in H-1B status when requesting an additional period of stay beyond the six year maximum.
Does that mean that at the date of my PERM's annivesary, even if I am not in the H-1B status (let's say I am H4 on that day), I will still be eligible to apply for the extension of my H1B? Assume my company allows me to convert to H4 for a month or two?
Thank you very much for your help.