Automatically switching from Armed Away to Armed Stay

I noticed that when I use ADC to arm the system in Armed Away mode it actually switches to Armed Stay mode immediately after. Any idea what’s going on?

This would be a result of “Auto-Stay” meaning the panel will revert to Stay mode if no entry/exit doors are tripped during the Away arming countdown.

On a Vista panel this would be found in installer programming under *84. Set it to 0 to disable.

Thanks for the info!