Diagnostic diagrams of the R₂–M₂ relation for V1082 Sgr (left) and V479 And (right), assuming that the donor star fills its Roche lobe and accounting for the revised Gaia distance ranges. The methodology is described in Sect. 4.1. Horizontal dotted lines indicate the donor star radii (assuming spherical geometry) corresponding to the spectral class T_eff needed to match the observed luminosity for different distances. Vertical lines mark the inferred donor masses. In the left panel, the solutions fall within the shaded green area. In contrast, solutions from the previous studies (labeled) illustrate that they are inconsistent with the revised distances adopted in this work.