Let $\mathscr{X}$ be a strictly semistable model of $X$ with canonical retraction $\tau\colon\mathscr{X}\to S(\mathscr{X})$. Let $\theta\in\mathcal{Z}^{1,1}(X)$ be determined on $\mathscr{X}$ and let $\varphi\colon X^{{\mathrm{an}}}\to\mathbb{R}$ be an arbitrary $\theta$-psh model function. Then $\varphi\circ\tau\colon X^{{\mathrm{an}}}\to\mathbb{R}$ is a $\theta$-psh model function with $\varphi\leq\varphi\circ\tau$.