Hi Eve,
Thank you for your interest in Essential Studio.
The method for importing xfdf file has been added recently.Could you please report your query through Direct Trac Developer Support System
https://www.syncfusion.com/account/login?ReturnUrl=%2fsupport%2fdirecttrac%2fincidents so that we can provide you the latest assemblies.
Please let us know if you have any queries.
Regards,
Angappan.