import test cases in Jira Zephyr Squad

Hello,
When I try to import test cases in Jira Zephyr Squad (1.3.29-AC), the assistant doesn't show the following fields when I map (Screenshot 2).
I add the Zephyr Teststep custom field to the Create screen for the Test issue type (Screenshot 2), but it doesn't show the mapping to Zephyr
am I missing something?
Thanks
Ester