PDF Editing Issues

How to Preserve Fillable Fields After Submitting a Signed PDF Form

Emma BrownEmma Brown Nov 3, 2026 869 views

Question details

The user needs to keep specific fillable fields and signature blocks active for internal use after a customer has signed and submitted a PDF form.

How to Keep Fillable Fields Active in a Signed PDF Form
Product
PDF / Adobe Acrobat
Device & OS
not provided
Scenario
Collecting customer signatures on a PDF form that requires further internal processing and signing upon return.
Observed behavior
Fillable fields and secondary signature fields disappear or become flattened once the customer signs and submits the document.
Before you start

Check the security and signature properties of your PDF form to ensure that 'flatten on submission' or 'lock document after signing' features are not prematurely activated.

Solution 1Recommended

Configure Form for Multiple Signers without Locking

Adjust your PDF signature workflow to allow sequential signers without locking or flattening the document after the first signature.

When a digital signature field is configured to lock the document, all subsequent fillable fields are rendered uneditable. Preventing this requires configuring the signature properties before sending the form.

1
Open Signature Properties

In your PDF editor's Form Preparation mode, right-click the customer's signature field and select 'Properties'.

2
Disable document locking

Navigate to the 'Signed' tab. Ensure the option 'Mark as read-only' or 'Lock document after signing' is unchecked. This allows the remaining yellow fields to stay editable.

3
Assign fields to specific roles

If using an advanced e-signature workflow tool, assign the customer-facing fields to 'Signer 1' and internal completion fields to 'Signer 2' or 'Sender' to preserve their visibility and editability across different stages.

Configure Form for Multiple Signers without Locking
Workflow Tip: Using a sequential signing workflow rather than a standard email submission ensures each party only interacts with the fields designated for them without flattening the whole file.
Efficient PDF Form Management

Create and Manage Fillable PDF Forms with WPS Office

WPS Office provides a comprehensive PDF toolkit that allows you to easily create fillable forms, manage multiple signature fields, and control document permissions without losing data during the signing process.

  1. 1. Open your PDF: Launch WPS Office and open the PDF document you want to prepare as a fillable form.
  2. 2. Navigate to the Form tab: Click on the 'Form' tab in the top ribbon to access the fillable field tools.
  3. 3. Add Signature Fields: Insert distinct signature fields for the customer and internal staff, ensuring document permissions allow multiple modifications.
  4. 4. Save and Share: Save the PDF and send it to your customer for the first round of signatures without fear of the document locking prematurely.
Easily insert text, checkbox, and signature fields into PDFsSupports multiple signers without unwanted document flatteningFully compatible with standard PDF formats and Adobe Acrobat formsLightweight application for seamless PDF editing and viewing
microsoft office alternative - wps office

Frequently Asked Questions

Why does a PDF lock after it is signed?

PDFs often lock after signing as a security measure to prevent unauthorized changes to the document after a digital signature is applied. This happens if the 'Lock document after signing' option is enabled in the signature field properties.

What does flattening a PDF mean?

Flattening a PDF merges all interactive elements, such as fillable form fields, annotations, and signatures, into the main document layer, making them permanent and no longer editable.

Can I edit a PDF after it has been signed?

Generally, any edits that alter the content of a signed PDF will invalidate the signature. However, if the document was set up for multiple signers, designated unfilled form fields can still be completed without breaking the previous signatures.