[asheshouse]

The _Tex folder is a common folder for new ground textures used in some modded maps.
Any new map installs may write to the _Tex folder but will not delete any existing files in it.

---- but to be on the safe side always make backups.

I never extract mods directly into the game folder.
I always extract to a temporary folder on desktop and then copy and paste from there into the game folder.
That ways its easier to see where any possible overwriting of files may occur.

Ashe