Probability density distribution the leftover hydrogen mass vs total stellar mass of the donor (left panel) and of the surface nitrogen mass fraction enhancement and rotational velocity for the mass gainer, for our binary models after the Case AB mass transfer phase. In contrast to Fig. 11, which depicts the same models at a time where the central helium mass fraction of the donors is 0.9, here we display the information for a donor central helium mass fraction of 0.1.