After I load my rigged tool and create my poses. Its smooth in the edit mode but as soon as I hit preview my model turns low res and not smooth. What is the best way to get it back to its original state?
You need to match the subdivisions of the density slider with the subdivisions of your original model. If it is 1 it won’t show subdivisions.
But keep in mind a change in 4r8 - this will not work unless your turn Dynamesh Resolution under the Adaptive skin box to “0” to get the high res previews.
Take a look to this tutorial that is quite good: