Evolution of the radial anisotropy profile β(r) in Plummer models with a central IMBH of mass M_IMBH = 10⁻³M, with a Salpeter IMF (top panel row) or equal masses (bottom panel row), N = 10⁶, and from left to right ξ₀ = 1 (isotropic), 1.5 (limit for stability), and 2.5 (critical for consistency). The thin dashed lines mark the initial (analytical) anisotropy profile. The empirical lines become somewhat noisy to the left because of the increasingly low number of particles available for calculating β(r) at small radii.