[O] Issue with #+TBLFM in dynamic block

[flav]

Slt,

I try to add formulas to a table in a dynamic block (obtained by columns 
capture), but when I update the dynamic block, the #+TBLFM line disappears and 
the added columns also disappear.


The file :
#+COLUMNS: %ITEM %Note
Soutenance finale promo 2013

* Note
  #+BEGIN: columnview :hlines 1 :id global :maxlevel 2 :skip-empty-rows t
  | ITEM     | Note | A | B | C | D | F |
  |----------+------+---+---+---+---+---|
  | ** scube | C    | 0 | 0 | 1 | 0 | 0 |
  | ** ids   | D    | 0 | 0 | 0 | 1 | 0 |
  #+TBLFM: $3='(if (equal "A" $2) 1 0)::$4='(if (equal "B" $2) 1 0)::$5='(if 
(equal "C" $2) 1 0)::$6='(if (equal "D" $2\
) 1 0)::$7='(if (equal "F" $2) 1 0)
  #+END:

** scube
   :PROPERTIES:
   :Note:     C
   :END:
[...]
** ids
   :PROPERTIES:
   :Note:     D
   :END:
[...]

After the C-c C-c

  #+BEGIN: columnview :hlines 1 :id global :maxlevel 2 :skip-empty-rows t
  | ITEM     | Note |
  |----------+------|
  | ** scube | C    |
  | ** ids   | D    |
  #+END:


M-x org-version
Org-mode version 7.9.1 (7.9.1-dist @ /usr/share/emacs/site-lisp/org/)

Do you have an idea ?
Thanks

-- 
flav