TN Shares CS Program

[Mr.fixitall]

I am trying to find out some information for my wife who has been divorced for a couple of years. TN had implemented a new law in early 2005 (after her divorce). It is called 'Shares Income CS Program' where the income of the Primary Resident Parent (PRP) is taken into consideration for the Alternate RP. X is stating he is taking her back to court to get his CS dropped since their divorce was prior to the new law since her salary was not taking into consideration.

Has anyone had any type of experience with this issue? If so, please share.