Difference between high order approx in Dynare and Dynare++

Thank you for your detailed response.

I just tried the

dynare++ --no-centralize example++order1.mod

example++order1.mod (1.0 KB) and it generates the same results as

dynare++ --centralize example++order1.mod.

And I have tested the difference for different x in order = x and the two commands seem to generate the same results.

More over, when I look at the IRF of dyn_irfp_EPS_mean(dyn_i_K,:), the results from dynare++ are roughly 20% lower than the one generated by the dynare exampledynare.mod (845 Bytes)

Do you happen to know why these two methods have the same results in this case? Thanks!