Does anyone know if a Kasa Dimmer switch will dim if in an Insteon Scene with dimming controlled by a Keypad button (like Insteon Dimmers do)?

@jkraus didn't you already ask this? Oh...that was for YoLink. I would expect the same answer here. Doubtful since there's no direct link from the Insteon signal to the Plugin to control Kasa. Perhaps you could create a program for brightness setting, but that's not usually controllable by pressing a dimmer and holding it to get the brightness you desire. 

Typically (from my experience) Insteon dimmers usually only impact Insteon devices and/or direct power load. External systems (those that are connected via Plugins) don't typically respond to Insteon commands without other programming through the IoX system. 

OK, makes sense, thanks!

BTW if I set the youlink "on Level" to say 50%, when I trigger the scene via the KPL it shoud come on at 50% correct?  (i.e. not controlling the brighness via the KPL, but just setting the "on level")

@jkraus not sure. I don't have devices like that. Try it out and report back. Maybe in your YoLink thread. Unless you think it would apply to both brands and plugins. 

I can report that does indeed work, and reproted also in the Yolink thread, thanks