  The separation of the connected and disconnected sea partons, which were
uncovered in the Euclidean path-integral formulation of the hadronic tensor, is
accommodated with an alternative parametrization of the non-perturbative parton
distribution functions in the CT18 global analysis. This is achieved with the
help of the distinct small $x$ behaviours of these two sea partons and the
constraint from the lattice calculation of the ratio of the strange momentum
fraction to that of the $\bar u$ or $\bar d$ in the disconnected insertion. The
whole dataset of CT18 is used in this CT18CS fit. The impact of the recent
SeaQuest data on the $\bar{d}(x)-\bar{u}(x)$ distribution of CT18CS is also
discussed. The separate momentum fractions for the valence, the connected sea
and disconnected sea of $u$ and $d$, the strange and the gluon partons are
presented at $\mu =1.3$ GeV for the first time. They can be compared
term-by-term with systematic error controlled lattice calculations.
