Currently exporting "pdf with embedded notes" will include form data in many cases and often forms remain editable as a bonus. As this is a real possibility should the user need to retain form data, why not make it clearer for him or her? I suggest this current feature could be given a more visible presence in the interface where it is appropriate.
As one possible solution I suggest to add an export submenu with all the possible export choices presented already in the menu. Selecting any of these would then open the export dialog with the selected export choice already selected. The effect would make the available choices more clear to the user.
The option "export form data as notes" could be among these export options, which would make the availability of this feature more clear.
An alternative is to "export form data as notes" or a similar worded choice is added.
Another option would be to lift up this possibility by not having the export options as a popup menu, but as clear choices in a radio button selection area inside the export dialog.
While the feature I want to highlight here may not work with every PDF file ever created it works more often than not, so I suggest this warrants making this a wider known feature for users.