Let $E$ be an elliptic curve of conductor $N\cdot p^3$ over $\mathbb{Q}$, defined by the equation $$y^2=x^3+p^2b\cdot x + p^3\cdot c$$ and parametrized by a map $$X_{0}(p\cdot N)\rightarrow E$$ and let $E_{\sqrt(p)}$ be the curve $$y^2=x^3+b+c$$ parametrized by a map $$X_{0}(N)\rightarrow E_{\sqrt(p)}$$ Both become isomorphic over $\mathbb{Q}[\sqrt{p}]$. Can a lifting of this isomorphism to a morphism: $X_{0}(N\cdot {p}^{3})\rightarrow X_{0}(N)$ be described explicitly?