Using ArcMap 10.3.1
What I am trying to achieve using ModelBuilder...
I want end users to select either 'roads', 'protected lines' or a combination of the two and then have the selected features merged into a new feature.
The problem I am having is if I select 'roads' but no 'protected lines' (or vice versa) the model assumes no selection means use the entire data set when I in fact want it to mean no selection/no data to merge.
I've tried incorporating the 'get count' tool but the result is the same as above (maybe I'm using it wrong?)
Image below of my model.