Keep file before first successful submit? (e.g. no form validation error)

[jkuchar]

Situation:
You are uploading for 5 hours huge video file. After these 5 hours server tells you that your email address is in wrong format. You have to reupload the video.

Solution:
When you upload video, it should still be there. MFU instance should keep it's content (like all other fields)

Do you think that is this good idea? I think at least there should be some implementation of setValue() for MFU. Please consider that there is already implemented automatic clean-up mechanism.