The exact location of the north magnetic pole migrates cyclically in a figure eight pattern. Astronimers and navigators have maintained tables of magnetic declination for over 500 years. This movement is well known and is no threat to anything.
Astronimers = Astronomers
As long as the earth has a magnetic field, it migrating is only a problem to those who have outdated navigation aids. But if the field diminished significantly, we would be toast.