[TYPO3-english] [TYPO3-core]Blank Flexform fields overwrite TypoScript values

[Nicolas Forgeot]

I raise the thread : 
http://lists.typo3.org/pipermail/typo3-project-typo3v4mvc/2010-February/003364.html,

Can we add checkbox to choose if the flexform input overrides the value 
? As the behavior of a title/alternative/description in an image : 
http://forge.typo3.org/attachments/22989/44-Bildschirmkopie.png.

Thanks

Nicolas