My first deer was shot in the liver with a shotgun so it might be slightly different. I shot it at an angle and the intestines blocked the entrance hole so there was NO blood. He took off into a reserve to we waited a bit. call the DNR to get permission to look. Luckily he was on a deer trail so we followed that into the woods and there he lay like he fell asleep. It also looked like he went to the bathroom before laying down to take his last nap. As far as good blood on the arrow it makes sense as the liver has a TON of blood going through it. Then maybe like mine somthing plugged up the entrance hole causing the lack of blood trail. Just my 2 cents.