How to retrieve internal interface draft data?

To my knowledge we cannot access any data "saved" in memory with the OOTB save function.  What I typically do here is disable this built-in save function on the User Input task, and create my own "Save For Later" type button within the form layout.  This will bypass validation, and technically submits the form to only chain through a Write to DS node, and chain back to the same form, typically with a custom "Data has been saved" type message, where they can X it closed and re-access from their Tasks List later.  This will persist the current values to the database where we can access them for reporting. 

To my knowledge we cannot access any data "saved" in memory with the OOTB save function.  What I typically do here is disable this built-in save function on the User Input task, and create my own "Save For Later" type button within the form layout.  This will bypass validation, and technically submits the form to only chain through a Write to DS node, and chain back to the same form, typically with a custom "Data has been saved" type message, where they can X it closed and re-access from their Tasks List later.  This will persist the current values to the database where we can access them for reporting. 

Thank you for the tip Chris, but initially I just need to get old draft data (if possible).

but Ok I understand there is no way.

Can you obtain it from just viewing the task yourself?  Assuming this is a small/single case.

I can't view these tasks anymore, but I was naively thinking that a tool or plugin could extract or display data from .Kdb files...