Result of an MC simulation with 10⁷ realizations for the deduced fraction of first-generation stars among all potential GC escapees obeying the selection function in Paper I (Figs. 20 and 21). Here, the blue and red histograms represent the findings from methods I and III, respectively. For comparison, we indicate the fractions for bound cluster stars as reported by Carretta et al. (2009, solid vertical line), Bastian & Lardo (2015, dashed vertical line), and the lowest value from Milone et al. (2017, dash-dotted vertical line).