Left panels: distribution of Gaia DR3 proper motion components for UMi RGB member stars (top panels) from Kirby et al. (2010) and Pace et al. (2020), for the whole sample of variable stars classified as RR Lyrae by Gaia (middle panels), and compared with UMi’s known RR Lyrae stars in the Gold sample (bottom panels). Central panels: Gaia DR3 proper motions maps for the three datasets shown in the left panels. The five RGB stars from Sestito et al. (2023) are marked by blue empty squares in the top central panel and in the right panel of the figure. Right panel: the proper motion map for all three datasets together. The proper motions of RR Lyrae stars included in the Gold sample are plotted with their uncertainties. The blue dashed lines in the bottom left panels and the blue dashed circle in the right panel mark the proper motion distribution range for RR Lyrae stars in the Gold sample.