  In any positive CR-dimension and CR-codimension we provide a construction of
real-analytic holomorphically nondegenerate CR-submanifolds, which are
$C^\infty$ CR-equivalent, but are inequivalent holomorphically. As a corollary,
we provide the negative answer to the conjecture of Ebenfelt and Huang
\cite{eh} on the analyticity of CR-equivalences between real-analytic Levi
nonflat hypersurfaces in dimension 2.
