Help Mysql flexi field

Thank you for your answer, but I just think as these new fields are all empty.
And if I replace my html fields with text fields with default values ​​that am updating each edition.
As I need to edit my content my values ​​will be updated, but then if I change my fields for remettrent html values ​​will they stay?

Values will stay, if you change from textarea to text, but this is not appropriate, since you have HTML plus long texts.

What i was saying is that i ll add the "Default Value Usage" parameter to textarea, (i will just use existing implementation from text field)

thus you will be able to define a default value for existing items that have no value defined