I just followed your instructions, and this doesn't do what I thought it was going to do. With your instructions, I have to be in one person't profile, and looking at the source citations only gives me the source citations for that person.
In order to do it your way, I need to know which people have Burial facts that were cited in the tombstone inscription book. This means I need to look at every person in my tree. Then, I still won't know which copy of the duplicate source is being used.
You are taking me from the Facts to the Source. I need to go from the Source to the Facts.
I'm kind of getting the feeling that there is no way to do this-- at least, not easily. Hmmm…