Outcoming particles not sorted in energy

hi , sorry to bother you
this is my code:
process ee = A, e1 => E1,e1,e1

beams = A, e1 => gaussian

beams_momentum = 5 keV, 5 GeV

gaussian_spread1= 0%

gaussian_spread2= 0%

plot E_Theta_Phi_E1

plot E_Theta_Phi_e1

plot E_Theta_Phi_e2

sample_format = mokka

beams_theta = 0,0.1

#?rebuild_events = true

analysis= record E_Theta_Phi_E1 (eval E["E1"], eval Theta["E1"], eval Phi["E1"]) and

          record E_Theta_Phi_e1 (eval E[extract index 1 [e1]], eval Theta[extract index 1 [e1]], eval Phi[extract index 1 [e1]])

          and

          record E_Theta_Phi_e2 (eval E[extract index 2 [e1]], eval Theta[extract index 2 [e1]], eval Phi[extract index 2 [e1]])

write_analysis

simulate (ee) {

luminosity = 0.63 / 1.e8 fbarn

 }

 compile_analysis
i just wanna ask how exactly whizard recognize the two electron after the process of Tpp.
I thought whizard called, for example, the more energetic electron(which should be the incoming electron) with index 1 and the less energetic with index 2.
But if i'm goingo to study theyr energy i obtain two identical profile, with some electron very energetic and some electron with energy near 20 Mev.