Mosaic issue (select Pane to start)

I have a two pane Mosaic. I wanted to start with Pane 2 vs Pane 1. I did this via the Running Options, Force Start with [Pane 2]. I saved this. When I reopen this mosaic sequence, it has not been saved and shows as [First in grid]. retried again and same result. What am I doing wrong here ?

Thanks