Suppose we fire a photon P at a polarisation filter F1, and it passes the filter, thus forcing the polarisation of P in an eigenstate M1. Subsequently, the photon falls through a polarisation filter F2, forcing P in eigenstate M2. Now, if I understand correctly, the probability of P passing F2, thus becoming in eigenstate M2 when in known eigenstate M1, can be exactly determined by the relative settings of F1 and F2. So, we have P passing F2 with a known probability. Now, In CI the probability represents the factual state of P (M2 or the perpendicular to M2), while MWI allows for both M2 and perpendicular to M2. So, it seems as if in MWI both eigenstates (M2 and the perpendicular) both have a probability of 100% of occuring, only in two different worlds. So, it seems as if MWI contradicts the probabilistic nature of QM? What is the explanation for this?