Similar to Figure 8, except comparing the predictions of N-body models (Fardal et al. 2007, 2012) in the NE shelf region for the formation of the GSS to observations of RGB stars (black points; this work) and PNs (blue open triangles; Merrett et al. 2003, 2006). The models contain a combined bulge, disk, and halo component for the host (orange points) and a satellite component corresponding to GSS-related tidal debris (red points). We show models for a merger remnant with (left panel) and without (right panel) an intact core. The observed projected phase-space distribution of the NE shelf broadly agrees with that of a tidal shell formed from a radial merger with the GSS progenitor, where the model with a completely disrupted progenitor provides a better match (Section 4.2).