So i have worked under the same entity for about 10 years and now i have resigned. Problem is the company changed 3 times during my stay, and we were given seperate appointment letters each time, my last appointment letter states specifically that my gratuity of 6 years has been carry forwarded to the latest company. However when asked after my resignation from the company, they're saying this is a new company under 5 years so gratuity cannot be applied. Can i legally claim gratuity benefits in this case?