Please retain command line options if unchecked

In Diablo III, at present, because player density on the AU/NZ servers is so low, I play public bounty games on the US servers. This necessitates me using additional command line arguments to do so. However, when I want to play on the AU/NZ servers to reduce my ping and push on the leaderboards, I have to uncheck the box. Sadly, each time I re-enable the command line arguments, I have to copy and paste from a text file on my computer each time as they are not retained.

Therefore I’d like a change to the application to retain the additional command line arguments but only use them when I’ve got the checkbox ticked.

For example: