Change messagename(external msg) without losing the messagemapping

HI all,

I´m using an external message "externalmsg1" with messagename(root) "test".

I´ve created a messagemapping by using "test"(external msg) as source and 2 RFC messages(multimapping) as target.

Now the messagename(inside the external message) was changed from "test" to "test_new".

Did you know how to change the external message from "test" to "test_new" WITHOUT losing the mapping ?

note: only the messagename was changed. The structure is the same!

Thanks for your help,

Gordon