How to import Term reference (autocomplete term widget) inside field collection with Feeds & feeds tamper

How to import Term reference (autocomplete term widget) inside field
collection with Feeds & feeds tamper

I would like to be able to import content from CSV using Feed. My content
type are like this : -Titre
-Field Collection :
--Name (simple text)
--Term (Term reference of type Autocomplete term widget (tagging)
For begin able to import field collection i have applied the #16 patch
https://drupal.org/node/1063434#comment-5217400
Everything is working fine exept the insert of my Term field in my
fieldcollection because is it of type Autocomplete term widget and if its
a new term. I want to keep this type of widget because i want to be able
to create new term if they doesnt exist already. I confirm that if i enter
a existing term value for my Term field in my csv, my term is succesfuly
added.
I am using :
Feeds : 7.x-2.0-alpha8+7-dev
Feeds Tamper : 7.x-1.0-beta3+56-dev
Field collection : 7.x-1.0-beta5
I dont know what i have missed... i am lost and blocked on this bug since
2 weeks.
I hope someone will help me,
Best regards
Jérôme