I am a physician (Indian citizen). I am on a H1. I have an approved I-140 for my current position.
A new job is available (with the same employer) that is substantially different from my current position. If the second job is different enough, will a new application invalidate the approved I-140? This specific question arose because the second PERM process has not been started yet and I am reaching my six year limit in June 2014. At present, as I understand it, I can get a H1 extension based on a prior approved I-140.
If INS revokes the approved I-140 on receipt of a new application, that may leave me with no approved I-140 as a basis for extension. From all I have read, such a revocation seems unlikely. Is there a specific USCIS rule that addresses this?