As far as I tested, when "Advanced Formats" is set to Yes, Date field works only if
- format is left to Y-m-d (with d/m/Y, 06/08/2013 will show as 08/06/2013)
- "Default to current date" is left to No (with Yes, whatever you type in, it is the current date that is saved)
not mentioning that date element save's form.
So better work without "Advanced Formats" which is not that much necessary since we have the pickers at hand.
- format is left to Y-m-d (with d/m/Y, 06/08/2013 will show as 08/06/2013)
- "Default to current date" is left to No (with Yes, whatever you type in, it is the current date that is saved)
not mentioning that date element save's form.
So better work without "Advanced Formats" which is not that much necessary since we have the pickers at hand.