Groove Agent SE patterns changing Tempo track events

I have a client who is dragging GA-SE patterns into Cubase, but about 80% of the time, doing so alters the tempo track at the bar where the pattern is placed. Even when he locks the Tempo track itself, the GA-SE pattern will change it when it’s dragged onto a track. It doesn’t do it on my machine with the same versions of GA-SE and Cubase Pro. Does anyone know what might be causing this, and better yet, how to prevent it?