I have about 15 custom presets for a Xerox WorkCenter 7855 printer stored on a Mac mini running Snow Leopard 10.6.8. I need them on my laptop running Yosemite 10.10.5, so I copied the following files from the mini's User/Library/Preferences folder to the corresponding one on the laptop:
com.apple.print.custompresets.forprinter._192_168_1_3.plist
com.apple.print.custompresets.forprinter.XeroxColor.plist
com.apple.print.PrintingPrefs.plist
But my custom presets don't show up on the Macbook Pro. Does anyone have any ideas why not?