Thanks for your reply.
You are right. In November 2006, petition was approved. So, I have already missed the 6-year window then and therefore H1B transfer may not be possible. Only way to come back to USA will be on fresh H1B visa quota that will open soon in April 2013.
"But, your 3 year departure has the potential for re-setting things." - Does this apply for H1B transfer under cap-exempt or for new H1B under cap-subject for FY2013-14?
We are now at the point where you should consider a private consultation with an immigration attorney ... this is going beyond the usable scope of an Internet Blog.