a) To not see any VI that isn't in the palettes at all?
or
b) To see only one copy of reentrant VIs [at least the ones from NI]?
The reason for showing all the clones is that each clone can have breakpoints and probes set independent of the others, and you can use this display to visit each clone in order to set different probes up, useful for tracking some types of bugs. You don't usually have to debug into NI VIs, but it isn't uncommon for people to make copies of our VIs and modify them for their own purposes.
Any idea that has received less than 3 kudos within 3 years after posting will be automatically declined.