Invoking hook script for a particular SAM Domain

Hi,

I'm currently working on the Migration of SAM 7.1 to 8.1 version

I have copied all local directory files and started SAM domain. We have an custom hook script which populates some userdefined columns. But that script is not being invoked nor userdefined columns populating.

I'm not able to find where is that hook script being invoked in 7.1 version also. Any Ideas or help on how to configure this greatly appreaciated.

Thanks,

Shiva