Is it OK to attach 1 MB file? 

To make it work I did a simple hack:

#+begin_src elisp
(defun org-columns-switch-columns ()
  (interactive)
  (save-excursion
    (org-columns-goto-top-level)
    (re-search-forward ":COLUMNS:")
    (org-metadown)
    (org-metadown)
    (org-columns)))
#+end_src

It works If I'm only changing the 'view', but it doesn't work properly
when I want to change column definition in e.g. remove or add a column.

Because the code for the view is 'reading' the last :COLUMNS: definition with
function (org-entry-get nil "COLUMNS" t).

But is 'changing' the first :COLUMNS: definition with function 
(org-entry-put nil "COLUMNS" fmt).

However, this is a bit of an inconsistency. This 'hack' could work
without any problems.  If the read and write behavior of property :COLUMNS: were
predictable, same.

Do you have any idea how to solve this problem?

Over 10 years ago Thomas Leitner asked about this feature
https://lists.gnu.org/archive/html/emacs-orgmode/2009-12/msg00797.html

@Thomas 
How did you deal with this feature?
Are you still using it?

Regards, 
-- 
Slawomir Grochowski