org-babel-expand-src-block behaviour is not pulling in :var header arguments

Hi,

Playing around with some functionality that requires that the function
`org-babel-expand-src-block` works as expected, meaning that the following orgmode content

#+BEGIN_SRC python :var data="ABC" :exports none
print(data)
#+END_SRC

when using `org-babel-expand-src-block` would open a buffer with

data="ABC"
print(data)

however if `ob-ipython` and `ipython` as src header is used then the `:var ` header argument is not pulled in correctly.

Is it possible to make this work?
The motivation is to produce reproducible code when possible while still make it possible to use ob-ipython.