optimq

I generated algs for Pa/opp using this command

C:\Users\Adminstrator\Downloads\sq1opt\sq1optim.exe A1B4D2C37E6F5G8H -w -m -a -n

and got the following

4,-3/2,-4/4,-5/3,0/0,-3/3,0/-1,-3  [6|17]
Nodes=235837
4,-3/2,-4/4,1/3,6/3,0/3,6/-1,3  [6|19]
Nodes=236594
4,3/2,-4/4,-5/3,0/0,-3/3,0/-1,3  [6|17]
Nodes=275433
4,3/2,-4/4,1/3,6/3,0/3,6/-1,-3  [6|19]
Nodes=276270
0,-4/3,6/3,0/3,6/4,1/2,-4/3,4  [6|18]
Nodes=343148
0,-4/3,0/0,-3/3,0/4,-5/2,-4/3,-2  [6|16]
Nodes=350057
0,2/3,6/3,0/3,6/4,1/2,-4/3,-2  [6|18]
Nodes=396070
0,2/3,0/0,-3/3,0/4,-5/2,-4/3,4  [6|16]
Nodes=401853

Every alg has a 5 or 6 on D so not great.

Then I tried this

C:\Users\Administrator\Downloads\sq1opt\sq1optim.exe A1B4D2C37E6F5G8H -a -n

And got these

0,-4/3,0/0,-3/3,0/4,-5/2,-4/3,-2  [6|16]
Nodes=596361
0,-4/-3,0/0,3/-3,0/4,1/2,-4/3,4  [6|16]
Nodes=614334
0,2/3,0/0,-3/3,0/4,-5/2,-4/3,4  [6|16]
Nodes=693830
0,2/-3,0/0,3/-3,0/4,1/2,-4/3,-2  [6|16]
Nodes=708450

Why were the second and fourth algs not included in the original search? They shouldn't been seen as equivalent to any others.