Issue Pre-Filling Form Fields When Editing a Post via post_id Parameter

Hi Fluent Forms team,

I’m building a custom solution using Fluent Forms Pro + JetEngine.

I’ve created a custom post type called “Aluguel”, and I’m using Fluent Forms to allow users to create new posts from the frontend — and that part is working perfectly.

Now I’m trying to allow users to edit their existing posts using a second Fluent Form. Here’s how it’s set up:

• I have a Listing Grid showing all posts created by the user
• Each post has an “Edit” button that links to a page like:
  https://mysite.com/editar-anuncios/?post_id=1990
• On that page, I’ve placed another Fluent Form
• There is a hidden field named post_id, with dynamic value {query.post_id}
• I’m also using a PHP hook to pass post_id to the submission_insert_data to force Fluent Forms to update the post
  (this part works fine — the post is updated)

✅ The problem:

The form fields are NOT pre-filled with the current post data, even though the post_id is correctly passed and received.

Fluent Forms is updating the correct post, but the fields are blank when the form loads. I expected the values from the post (like title, content, and meta fields) to populate the form automatically based on post_id, but that’s not happening.

❓What I need:

Is there a built-in way to pre-fill form fields from a post using the post_id in the query string?

If not, is there an official method or hook (like fluentform_rendering_field_data) to dynamically load post data into each field?

🔧 Already implemented:

• post_id is passed via {query.post_id}
• Hidden input is present and working
• fluentform_submission_insert_data is in place and updates the post correctly
• All field meta keys match those in JetEngine

Thanks in advance for your help — I’m committed to using Fluent Forms for the entire workflow and hope there’s a clean solution to this.

Best regards,
Saulo