I would guess it must be different in Australia. Perhaps they only require the first 3 generations or such to classify a horse as SE?
Amir: :.: Fair Oak Farm :.: Home Page :.:
The above site mentions Estopa lines as a cross for Straight Egyptians,
And Carmargue Arabian
Shows Carmargue as a Spanish National Champion.
He is listed as 56% Crabbet in breeding.
If you look through the lines with a certain symbol under your horse's bloodlines on allbreedingpedigree.com - you can see some come up with % of Crabbet breeding in your horse's bloodlines.