evolution and one should diagonalize $y_e$ and $M_R$ again at the lower scale. Therefore, one has to find out the effect of these final rotations.

We adopt the rotating basis method introduced in Ref. [@bs], where the RGE are modified to incorporate the fact that the matrices are defined in the LF basis at each scale, so that $y_e$ and $M_R$ are always diagonal. It is worth to stress that, even if the rotations needed to diagonalize $y_e$ are small, their effect could be crucial for ${\cal I}m(A_{ii})$ and the four products of $\d$’s in eq. (\[FV\]). For instance, in the case of $SU(5)$ plus seesaw it turns out that this correction exactly cancels the term proportional to $t_T^2  {\cal I}m( U^* y_e N )_{ii}$ in $A_e$. On the contrary, these rotations can be safely neglected when deriving approximate expressions for the radiatively-induced LFV decays because the latter are only sensitive to absolute values of $\d$’s.

Lepton EDMs and Seesaw
======================

In this section we consider the predictions for lepton EDMs in the context of the supersymmetric extension of the seesaw model, namely we assume the MSSM supplemented with the seesaw Yukawa interactions and Majorana masses for the right-handed neutrinos 