2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192745Conditions for the gluing matrix defining consistent boundary conditions of two-dimensional nonlinear sigma-models are analyzed and reformulated. Transformation properties of the right-invariant fields under Poisson-Lie T-plurality are used to derive a formula for the transformation of the boundary conditions. Examples of transformation of D-branes in two and three dimensions are presented. We investigate obstacles arising in this procedure and propose possible solutions.25 pages, LaTeX; major revision, discussion of boundary fields added; author's version of the published paperHigh Energy Physics - Theorytext