How to combine JotForm submissions in a 2-step Zapier membership onboarding?

Zapiers,

I have a 2 step process for my membership on-boarding.

Step 1

Trigger

First the members sign-up for membership

• email
• password
• first name
• lastname

Action

Out of that I push that information into jotform

• Submission ID# (jotform)
• membership #
• email
• firstname
• lastname

Next I have the users redirected to a jotform for additional data for that user.

Step 2

first name

lastname

email

location

likes

dislikes

etc

This issue is that I end up with two different jotform submissions

line 1   member #      first name.   last name    email

line 2                              first name.   last name    email     location    like      dislike.   etc 

How do I feed step 2 into the same jotform submission instead of two different submissions?

I feel like I should be able to prepopulate the data once I have “email”

Cheshire