Org-agenda ignores archive tag set by "#+FILETAGS: ARCHIVE"

[George Sokolsky]

Hello!

I have .org files with  "#+FILETAGS: ARCHIVE" headers.

I want items from these .org files to be hidden by default from results
of "org-agenda" -> "s Search for keywords" by default.

This is not the case, unfortunately.

Calling "org-agenda-archives-mode" in agenda view also ignores
items from .org files with  "#+FILETAGS: ARCHIVE" and does not hide them.

Both "org-agenda" -> "s Search for keywords" and
"org-agenda-archives-mode" only hide items, which have :ARCHIVE: tag
assigned to them or to their parents.

Items from .org files with  "#+FILETAGS: ARCHIVE" are still shown in
agenda view. They are shown as having ":ARCHIVE::" tag and I could hide
them by calling "org-agenda-filter" ->  "-archive". But this is manual
effort every time.

Ideally I'd want to:

1. When calling "org-agenda" -> "s Search for keywords" both (a) items
with :ARCHIVE: tag and (b) all items from .org files with "#+FILETAGS:
ARCHIVE" are hidden by default

2. Calling "org-agenda-archives-mode" in agenda view will also show/hide
items from .org files with "#+FILETAGS: ARCHIVE"


*How the above could be done, please?*


I run org version 20200511 on GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, 
GTK+ Version 3.20.8) of 2020-04-25


Thank you!