I have a first model 219 in 30-30, the model with a striker that cocks when the top lever is pushed to the right. The safety is automatically moved to the safe position at the same time.
I don't like this automatic safety feature because there is no way to avoid dry firing the gun to de-cock it. I've heard that dry firing this model can result in a broken firing pin.
My first solution was to remove the safety button and internal safety lever. With those parts removed I can de-cock by pushing the top lever hard right, pulling the trigger, and letting the lever come back slowly. This was an easy mod but it required the gun be carried empty until ready to shoot.
There was another option. These guns are a pain to work on but today I bit the boolit and took it apart. I removed the safety push rod and push rod spring. After a few appropriate incantations, I got it back together, including the safety button and safety lever.
Now it has a functional safety which is not moved to the safe position automatically. So I can carry it loaded and on safe, but I can de-cock after unloading the chamber by using the top lever.
One thing hasn't changed. Never de-cock when the barrel is open. It's a sure fire way to snap off the firing pin when you close the barrel!