Relative differences on rest-frame 850 µm luminosity and FIR beam-deconvolved size of the stacked galaxies based on astrometry from the COSMOS-2020 catalog (Weaver et al. 2021) or A³COSMOS catalog (Liu et al. 2019b). Squares show the relative difference on the stacked . Circles display the relative difference on the FIR size for the resolved stacked galaxies, while stars show the bins where the stacks are spatially unresolved (i.e., point sources). Symbols are color-coded by stellar mass, i.e., pink for 10¹¹ ≤ M_★/M_⊙ < 10¹², orange for 10^10.5 ≤ M_★/M_⊙ < 10¹¹, and blue for 10¹⁰ ≤ M_★/M_⊙ < 10^10.5. The green dashed lines are the average uncertainties in each panel, while values are given on the bottom left of each panel. Overall, using either optically-based or (sub)millimeter-based positions in stacking analysis yields consistent results.