I am trying to merge two data sets. I want to label the source with a flag so that I can easily identify all its members in the target. I created a flag, "source_data" with the default values (?,N,Y) in the source data set and set its value to Y. This flag does not exist in the target. When I merge the source into the target the value of the flag is set to ? for everybody including those from the source. I expected that the old target members would have ? but that the new members merged (imported) from the source would retain the value of Y that I had set. Is this a bug or am I doing something wrong? I have researched the behavior in Terry Riegel's tips and in the TMG archive and it seems as though what I expect should work. I am using TMG9.05.