Characteristic orbital energy ((E_max + E_min)/2) versus the orbital Jacobi constant (E_J) in the non-inertial reference frame where the bar is at rest. Square symbols refer to Galactic GCs, colour-coded according to their associations with different progenitors from Massari et al. (2019). The revisited dynamics of UKS 1, adopting the input parameters presented in this work, is shown with the black crosses. NGC 2808 (black triangle) is ighlighted for reference.