Nose and Hunt I disagree, if your line doesnt have it you are out of luck. I used the horse analogy as a black and white illustration. as far as breeding back in what you have bred out? if it is bred out it is GONE! you can spend 20 years in a breeding program to find this out if you like but I believe I will make an outcross as a quick fix with better odds.
raider 54 ....... read what i said ......you will need to outcross for physical aspects as well as color if you don't have what you desire in your line ....but far as nose and hunt .....NO .......those are dog inherited traits ....perty much all lines of dogs have it ......you just may have to breed several times to get one with it then line breed from there ........ your trying to use horse logic to dogs in some area's it just doesn't aply ......
for instance some of the working lines of dog have been show bred so much they don't show much of the traits they were bred for .......nose /hunt/ now in reverse respect if you can breed it out you can breed it back ......