This is interesting Hanka because this is the way breeding groups work, but it's indeed a bit disconnect with reallity. For exemple, let's take a dog from group V: Ali Terespol. Look at it's inbreeding composition on 8 generations:
http://www.amicale-chien-loup-tcheco...d=6671&depth=8
As you can see Rep comes first with 8.04901123047%. Atos Heol CS comes 2nd with 1.77384614945%, so far less. It's the same for all groups.
In the other hand, calculating COI on full pedigree is very interesting but it's a statistical footprint, it's difficult to make the difference between the "old influence and the new one" at genetic level as each generation bring it's new contribution with epigenetic changes (among others) that we know transmissible.