No No and 100% No, if you were hired internally i mean your fisrt sponser realsed you than this is your second sponser correct me if am wrong in this case he dont have any right to cancel you coz you were hired locally. in only cases your sponser may cancel you incase he report against you in traffic or labour dept. but if its a case of incremant try to explain him. its my advice. coz in immgration it will shows your first entry even changing of sponser they always ask your 1st entry just to make sure you have your own visa your case is just like mine when one of the Prestigeous company tried to cancel me without any reason but i got my right through labor dept and today am so happy being with Mercedes Benz. wish you the same.