I'm currently trying to figure out how to work with the JOG location diagram in 10.1. My understanding is that you no longer have to 'insert' this element, as it is already provided in the JOG template with its own data frame.
In my JOG mxd, I have the vectors referencing the MapIndex.mdb provided with Defense Mapping, which brought in the JOG_Index, ONC_Index, and WAC_Index. What I am left with is a location diagram without the proper projection and no lat/long coordinates.
I understand this may be as simple as setting the projection (what is it supposed to be??) and making my own grid.
There is no mention of this change ANYWHERE in the help menus.