The company I work for, CompanyA, was recently taken over by CompanyB and all CompanyA employees were asked to sign new contracts which gave us better benefits than we previously had with CompanyA. On the contract it was defined as a contract between myself and CompanyB. I was happy with the contract so signed it and returned it.
Today, several months after returning the new contract, HR have contacted me to say that the contract was wrong and should have been an agreement between CompanyA and myself, and not CompanyB. HR have asked me to sign another letter to confirm they can make the change. This made me wonder why this would be so important as surely we are all part of the happy CompanyB family, and whether this was something I should worry about? For example if they were considering closing CompanyA would this make things easier?