It seems Epi is storing submission data somewhere, for example when using the form stepper, clicking "Next step" will trigger a Submit and data is saved. If I reload the page, the fields will populate with that previously saved data. Disabling javascript or disabling cookies will prevent this behaviour, but that's not an option.

We have custom Save/Send logic for our implementation that does not utilize Epis Submit event, thus causing a conflict with how data is populated (we use an external data source). 

I tried implementing my own Controller and overriding the Submit method, simply returning a new EmptyResult, this will prevent Epi from saving data but it will also break the stepper functionality as it relies on the server returning something to trigger a step change.

I want to use the stepper component, but I do not want it to Submit data on step change, can this be solved? Or if it must save data, can I disable the population of said data?