Message Mapping changes not working after transport

Hi All,

I have done some changes(created a UDF and used it to map one of the fields) in message mapping in my Dev system. After I transported mapping to Quality system and test it, its not working.I mean,  I can see the changes in the quality system, but during end to end testing latest logic is not applied.

Let me know, if im missing something here.

Thanks in advance,

Arun