1 INTRODUCTION  
2 THE PRISTINE INNER GALAXY SURVEY (PIGS)  
2.1 Comparison with APOGEE and Gaia XP metallicities  
3 DYNAMICAL ANALYSIS  
3.1 Distance determination with StarHorse  
3.2 Orbit integration in the Portail et al. (2017)/Sormani et al. (2022) potential  
3.3 Dynamics catalogue  
4 RESULTS  
4.1 Comparison with high-metallicity stars from APOGEE  
4.2 Metal-poor stars are less confined than metal-rich stars  
4.3 VMP stars still show a coherent rotational signature  
4.4 No evidence for different kinematics for CEMP stars  
5 DISCUSSION  
5.1 Possible limitations  
5.2 Comparison with the literature and interpretation  
5.3 Future work  
6 SUMMARY AND CONCLUSIONS