badi FTR_TAX_POSTING_TR in transaction TBB1

Hi All,

     As part of business partner validation during posting, we had implemented the badi FTR_TAX_POSTING_TR in treasury system. The problem is that the badi is not getting called after we upgraded the system to ECC 6.0. Is this behaviour introduced as part of upgrade or am I missing something like configuration etc which is resulting in badi not getting called?

Thanks in advance,

~Athreya