Up down arrow causes me to loose my changes

Very annoying for me. When I am editing a macro if I hit the up/down arrow instead of left/right it moves to the previous or next macro on my Macro list and DOES NOT ask to save so I loose the changes I have made. Is there a setting that I am missing? It should not be possible to leave the macro without being warned about saving.

Are you using the latest V6.1.2? This bug has been fixed already.