The queston to remove, backup, or keep the prefrences is normally asked during the SR1 install.
If any change happened during the SR1 install, it is here that you had the choice to do so or not.
Where the backup files go, depends on your OS and UAC settings.

The default setting for gamma correction in the render settings still is 2.2 (PoserPro2012) Poser9 does not have gama correction.

SSS is defaulted to ON in the normal render settings also.

Happy Posering to ya all.
Tony

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!