  We illustrate the importance of interference revival when higher order
corrections are included, by presenting LO and NLO differential cross-sections
and $K$-factors for three processes that are sensitive to the dimension-6 SMEFT
operator $O_W$ : $Z$-plus-two-jets ($Zjj$) production through Vector Boson
Fusion (VBF), leptonic diboson $WZ$ and $W\gamma$. We show how lifting the
interference suppression at LO, through suitable variables and cuts, is
necessary to get reliable predictions at NLO. We also show bounds on $C_W$
obtained from these observables
