
Personally I would just enter Any Variety Not Separtely Classified Terrier Graduate but thats just me....If you went in an ordinary Any Variety class you could withdraw.
What will happen is, the winners of the 3 AV NSC Terrier classes will compete against each other t0 get Best AV NSC terrier(the same as if it had been breed classes(Best of Breed). If you dont get Best AV NSC terrier I would not withdraw..only withdraw if you win best AVNSC TRR, so you can compete in your group.