I am working in a Company ABC ltd situated in Delhi. But for the payroll purpose the company is paying me salary through one of its sister concern xyz ltd. situated in ghaziabad.At the time of resignation the company would give experience certificate on the letter head of XYZ ltd stating the fact that i am also handling the ABC ltd and other group companies.Would it make any effect on my careeer ABC ltd is better co.than XYZ ltd and at the time of appointment an mail was sent confirming my appointment and the mail was sent from official mail id of ABC ltd.