I'm using 10.6.1. I have my main map data frame index that is driven by a feature class based on the Site Name. I assumed that if I copied this layer and put it in the inset map data frame and made this was driven by the same feature class with the same name and sort field that when I clicked through the pages, that everything would just drive together. That is not the case. I choose the definition setup of the DDP for both the main and inset maps to be the same, but it will just switch to something else on it's own. Its so strange! What am I doing wrong?
