Mass-to-flux over initial mass-to-flux ratio of the fragments as a function of mass for μ = 2 at time t = 0.7301 Myr in the high resolution run calculations. Three density thresholds are considered. For a threshold of 10⁷   cm^-3, the mass-to-flux of the fragments is very close to the initial value, while it is typically 10 to 30 times higher for a threshold equal to 10¹¹   cm^-3, indicating that most of the magnetic flux was lost by numerical diffusion.