Attachments not saving when leaving form to finish later

My form's attachments are not saving when I come back to complete the form later (while using the unique number URL). Everything else saves but attachments do not stay attached.

How can I change the form to make it so that everything saves.

Thank you for contacting us.

We have two continue later options:

1) Autofill Continue Later. That option is currently enabled on your form. It is saving the data for up to 24 hours in the same browser, but it does not save the file uploads. No special links required for that option.

2) More advanced, session-based continue later option. That option saves the file uploads. However, to be able to use that option you will need to have an additional invitation template that will generate a unique session URL for the form user. Also, you will need to have the page breaks on the main form.

If you have any follow up questions, please let us know.