RIR transfer a curved geometry to Revit

[user2450 (Bread_Chan)]

Dear all:
i have tried transfer a curved kerb from rhino to revit in using RIR , but it seems not smooth shown in Revit , may i know how to make it well.
Rhino view:

Revit view

thanks in advance
Brad

[user2450 (Bread_Chan)]

sorry all again

it seems coordinate issue , will keep study on that,