This is true for jQuery, and maybe true for JavaScript in general.
If you have an input field that is disabled:
<input type="text" name="example" value="example" disabled="disabled">
You cannot attach / bind any events to it ( ie. onClick, onSumbit, etc.. ).
In order to work with those disabled fields, you have to make a separate trigger that is NOT disabled, to enable those fields before they are accessible.
If someone knows otherwise, please let me know.