AX 2012 up gradation issues

Hi All ,

After up gradation of AX 2012 from 2009 , normally some issues came like records duplication of customers , vendors, products ( but in the previous version no duplications) , Master record names not updated ,Posting profiles accounts not updated ( in the previous version all accounts are configured in posting profiles ) and posting types updated wrongly in the transaction tables .

Could any one share me how to resolve the issues or any MS guide is available to resolve these issues ?

How did you do the code upgrade? Are you sure that it ran correctly?