Mass-transfer rates of the pre-AIC binaries shown in the vertical part of the cross in the upper panel of Fig. 3. The four donor stars have masses of 1.6 − 2.2 M_⊙ and P_orb = 2.0^d. The arrows mark the collapse of the accreting ONeMg WD (AIC) for the two most massive stars. Donor stars with initial masses M₂ ≥ 2.6 M_⊙ result in excessive mass-transfer rates and thus do not produce AIC events (see text).