Not sure if this will be helpful to others, but I thought I would post it all the same.
We record an obscene number of shows every day, but only a handful of them are first run shows. I created this import for SageMC that adds a filter button on the Recording TV screen, allowing you to only display those shows that are first runs.
Just unzip this into your SageTV\SageTV\STVs\SageTV3 directory and import it into SageMC.