H1B Amendment and GC Process

[visaseekerUS]

Hi Gurus,

 

Here is my situation:

 

My company applied My H1B with position A in January 2013 and I got I-797 for 3 years.

 

After 6 months the whole company reformed the designations and my designation also changed from A to B with no change in salary, responsibilities and duties.

 

My employer started my GreenCard (GC) process with position B which is my current position. They have already received prevailing wage in May 2014 for position B. Now attorney is saying that I need to first file H1 Amendment in order to start GC because my H1 was for Position A.

 

Here are my questions:

 

1) Do they really need to file H1 Amendment ? 

2) If they start H1 Amendment, Do they need to hold my GC process till I get H1 amendment? 

3) Is H1 amendment holding point for GC process?

 

Its really urgent!  Appreciate your help in this matter!

 

Thanks,

[visaseekerUS]

It will be great if anybody can help me in this matter!