Exp letter issue due to onsite job switch, on H1B currently

Hello ,

I am having 4 yrs of exp and is currently working in a desi consulting company and is in onsite deputation for 7 months now in h1B. However, they intend me to stay in this project for 2 yrs ( NOT A BONDED agreement though). 

 

Meanwhile i applied for another US based company due to increase in pay package and better job prospect . they agreed to transfer my h1B.  my question is 

 

1) If i give a resignation letter to the desi company, will i get Experience letter from them? if NOT how to claim that. 

2) will it be a problem in FUTURE (specially if i move back to India) if i don't get the experience certificate.

3) can there be any chances of any legal action against me in this regard. 

 

Thanks & Regards,

 

PS

can anyone please respond