Set you loots NPC price to 500. It will pick them up.[/b]
As I showed in the other posts I know to lower the Shop Price of the items I want to farm, but this does NOT work for Image change scrolls in my experiance. I farmed Burning Skeletons in Roan with my Sin for an hour and when I opened my inventory and noticed I picked up nothing I got curious and started opening boxes to see what was going on. I knew they droped them and loot pet was set at my normal shop price of 1. I like to loot everything , 1 coin form npc for 1 item is 1 more coin that I didn't have :P So anyway I looked in each box as I killed and I noticed pet picked up coin and any items in the box but never picked up the image change scrolls. I checked this a few times and my clannies have checked it as well.
Also forgot to mention that if you buy an automatic loot voucher and use it for your pet, the voucher stay's with your character NOT your pet. So if you have 5 pets and one character all pets you summon wll have the loot pet. If you sell your pet the voucher does not go to the buyer of the pet. If you have 2 characters on 1 accoint your pet can be swaped through your inn but the Loot pet coucher can not. So only the character that had the voucher gets the auto loot. good if your selling your pets, bad if you like to share your items between your own diff characters :s lol