Scenario:
Drawing 1 (dwg1) has the point style called "st".
Drawing 2 (dwg2) has the point style also called "st".
Dwg2 has a Key Description set which has a code with the point style "st".
Dwg1 is a Reference Template within dwg2.
If we create a copy of "st" style in dwg2, called "st-copy", in the Key Description Set, the "st" style is replaced automatically to "st-copy".
In my opinion, C3D should warn us about this behavoiur with a messagebox (Yes/No) if we want a replacement or not.