Snapshots and Graphics Settings

With Snapshots (and particularly AS2012 AutoGenerated snapshots), Are the current Graphics Resolution settings used during the creation of the snapshots but then not when you select/install a snapshot? Basically, if I change my graphics settings (say to lower or higher resolution and/or DXT5/32 bit quality) do I need to regenerate previously AS created snapshots?Also, with AutoGenerated sets, is there any relationship to the defined set of themes, or does it randomly generate across all of the texture types and variations?Thanks,Jason