If user is unable to see some vRA blueprint form fields on ServiceNow catalog item then do the following check in ServiceNow and perform Import job run again to see if field is now visible or not.
There are some vRA blueprint fields excluded to be shown on serviceNow catalog form.
You can check the list below, Go the below URL and find out missing field under "Value"
If previously missing field is present under "Value" then remove it and click on Update button.
Now run import job again to see if catalog item contains the field which was not visible previously.