  Many observations show that coronal holes (CHs) deviate coronal mass
ejections (CMEs) away from them. However, there are some peculiar events
reported where the opposite occurs. To contribute to a space weather forecast
efforts, in relation to the prediction of CME trajectories, we study the
interaction between flux ropes (FRs) and CHs through numerical simulations. We
perform 2.5D numerical simulations where FRs and CHs interact with different
relative polarity configurations. We also reconstruct the trajectory and
magnetic environment of a peculiar event occurred on 30 April 2012. The
numerical simulations indicate that at low coronal levels, depending on the
relative magnetic field polarity between the FR and the CH, the deflection will
be attractive, i.e. the FR moves towards the CH (for anti-aligned polarities)
or repulsive, i.e. the FR moves away to the CH (for aligned polarities). This
is likely due to the formation of vanishing magnetic field regions or null
points, located between the FR and the CH or, at the other side of the FR,
respectively. The analysed observational event shows a double-deflection, first
departing from the radial direction by approaching the CH and then moving away
from it suggesting that the trajectory could result from a magnetic
configuration with an anti-aligned polarity. We numerically reproduce the
double deflection of the observed event, providing support to this conjecture.
