Hi Rob,
I see that you gave your new container element CR_CREATOR_NAME_LEADING_US the name "CR_CREATOR_NAME". That is bound to cause confusion.
If container element CR_CREATOR_NAME does not exist in the workflow container then could it perhaps exist in a Step workflow container?
You would have to make a method to do the concatenation and then create a TS task to call that method. Check the other workflows if there is already a task used for that.
regards
Rick Bakker