I am archiving subtrees of my main Orgmode document to a top-level
datetree in a secondary file. When I do so, I expect something like
the following:

* 2020
*** 2020-02 February  (org-odd-levels-only t)
***** 2020-02-27 Thursday
******* Archived Item

But instead I get

* 2020
*** 2020-02 February
***** 2020-02-27 Thursday
***** Archived Item

The archived item ends up as a sibling of the targeted date, instead of
a child. This seems incorrect.

Thanks,
Charles

Emacs  : GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.2), modified by Debian
Package: Org mode version 9.3.6 (9.3.6-17-g389288-elpa @ /home/charlestam/.emacs.d/elpa/org-20200224/)

current state:
==============
(setq
 org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer)
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-link-shell-confirm-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-html-format-inlinetask-function 'org-html-format-inlinetask-default-function
 org-special-ctrl-a/e t
 org-agenda-files '("~/mise/TODO")
 org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
 org-reveal-start-hook '(org-decrypt-entry)
 org-modules '(org-w3m org-bbdb org-bibtex org-docview org-gnus org-info org-irc org-mhe org-rmail
               org-eww)
 org-link-doi-server-url "http://dx.doi.org/"
 org-archive-location "%s_archive::datetree/"
 org-mode-hook '((closure
                  (org--rds reftex-docstruct-symbol org-with-time org-defdecode org-def
                   org-read-date-inactive org-ans2 org-ans1 org-columns-current-fmt-compiled
                   org-end-time-was-given org-time-was-given org-blocked-by-checkboxes org-state
                   org-agenda-headline-snapshot-before-repeat org-capture-last-stored-marker
                   org-struct-menu org-last-state org-id-track-globally texmathp-why
                   remember-data-file iswitchb-temp-buflist calc-embedded-open-mode
                   calc-embedded-open-formula calc-embedded-close-formula align-mode-rules-list
                   org-export-registered-backends org-indent-indentation-per-level
                   org-inlinetask-min-level t)
                  nil
                  (add-hook (quote change-major-mode-hook) (quote org-show-all) (quote append)
                   (quote local))
                  )
                 (closure (*this* org-babel-confirm-evaluate-answer-no t) nil
                  (add-hook (quote change-major-mode-hook) (quote org-babel-show-result-all)
                   (quote append) (quote local))
                  )
                 (closure (t) nil (setq imenu-create-index-function (quote org-imenu-get-tree)))
                 (lambda nil (auto-fill-mode t) (local-set-key (kbd "M-[") (quote org-metaleft))
                  (local-set-key (kbd "M-]") (quote org-metaright))
                  (local-set-key (kbd "M-{") (quote org-shiftmetaleft))
                  (local-set-key (kbd "M-}") (quote org-shiftmetaright))
                  (local-set-key (kbd "<backtab>") (quote org-shifttab))
                  (local-unset-key (kbd "C-c C-j")) (local-unset-key (kbd "C-,")))
                 turn-on-font-lock
                 (lambda nil
                  (font-lock-add-keywords nil (quote (("{{{.+}}}" 0 (quote org-macro-face))))))
                 #[0 "\301\211 \207" [imenu-create-index-function org-imenu-get-tree] 2]
                 #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-show-all append local] 5]
                 #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-babel-show-result-all append local] 5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-bibtex-headline-format-function #[257 "\300 \236A\207" [:title] 3 "\n\n(fn ENTRY)"]
 org-latex-format-drawer-function '(closure (t) (_ contents) contents)
 org-babel-pre-tangle-hook '(save-buffer)
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
 org-hide-leading-stars t
 org-babel-load-languages '((python . t))
 org-clock-clocktable-default-properties '(:maxlevel 2 :scope file)
 org-log-done 'time
 org-hide-emphasis-markers t
 org-export-backends '(ascii html latex md)
 org-ascii-format-drawer-function '(closure (t) (_name contents _width) contents)
 org-use-fast-todo-selection t
 org-occur-hook '(org-first-headline-recenter)
 org-agenda-start-with-log-mode t
 org-odd-levels-only t
 org-structure-template-alist '(("n" "#+NAME: ?") ("p" "#+BEGIN_SRC python?\n#+END_SRC")
                                ("a" . "export ascii") ("c" . "center") ("C" . "comment")
                                ("e" . "example") ("E" . "export") ("h" . "export html")
                                ("l" . "export latex") ("q" . "quote") ("s" . "src") ("v" . "verse"))
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
 org-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate)
 org-tags-column -100
 org-preview-latex-process-alist '((dvipng :programs ("latex" "dvipng") :description "dvi > png"
                                    :message "you need to install the programs: latex and dvipng."
                                    :image-input-type "dvi" :image-output-type "png"
                                    :image-size-adjust (1.0 . 1.0) :latex-compiler
                                    ("latex -interaction nonstopmode -output-directory %o %f")
                                    :image-converter
                                    ("dvipng -fg %F -bg %B -D %D -T tight -o %O %f"))
                                   (dvisvgm :programs ("latex" "dvisvgm") :description "dvi > svg"
                                    :message "you need to install the programs: latex and dvisvgm."
                                    :use-xcolor t :image-input-type "dvi" :image-output-type "svg"
                                    :image-size-adjust (1.7 . 1.5) :latex-compiler
                                    ("latex -interaction nonstopmode -output-directory %o %f")
                                    :image-converter ("dvisvgm %f -n -b min -c %S -o %O"))
                                   (imagemagick :programs ("latex" "convert") :description
                                    "pdf > png" :message
                                    "you need to install the programs: latex and imagemagick."
                                    :use-xcolor t :image-input-type "pdf" :image-output-type "png"
                                    :image-size-adjust (1.0 . 1.0) :latex-compiler
                                    ("pdflatex -interaction nonstopmode -output-directory %o %f")
                                    :image-converter
                                    ("convert -density %D -trim -antialias %f -quality 100 %O"))
                                   )
 org-table-number-regexp "^\\([<>]?[-+^.0-9]*[0-9][-+^.0-9eEdDx()%:]*\\|[<>]?[-+]?0[xX][0-9a-fA-F.]+\\|[<>]?[-+]?[0-9]+#[0-9a-zA-Z.]+\\|nan\\|[-+u]?inf\\)$"
 org-agenda-start-with-clockreport-mode t
 org-babel-tangle-lang-exts '(("python" . "py") ("emacs-lisp" . "el") ("elisp" . "el"))
 org-confirm-shell-link-function 'yes-or-no-p
 org-link-parameters '(("attachment" :follow org-attach-open-link :export org-attach-export-link
                        :complete org-attach-complete-link)
                       ("id" :follow org-id-open) ("eww" :follow eww :store org-eww-store-link)
                       ("rmail" :follow org-rmail-open :store org-rmail-store-link)
                       ("mhe" :follow org-mhe-open :store org-mhe-store-link)
                       ("irc" :follow org-irc-visit :store org-irc-store-link :export org-irc-export)
                       ("info" :follow org-info-open :export org-info-export :store
                        org-info-store-link)
                       ("gnus" :follow org-gnus-open :store org-gnus-store-link)
                       ("docview" :follow org-docview-open :export org-docview-export :store
                        org-docview-store-link)
                       ("bibtex" :follow org-bibtex-open :store org-bibtex-store-link)
                       ("bbdb" :follow org-bbdb-open :export org-bbdb-export :complete
                        org-bbdb-complete-link :store org-bbdb-store-link)
                       ("w3m" :store org-w3m-store-link) ("file+sys") ("file+emacs")
                       ("doi" :follow org-link--open-doi) ("elisp" :follow org-link--open-elisp)
                       ("file" :complete org-link-complete-file)
                       ("ftp" :follow
                        #[257 "\301\300\302 Q!\207" ["ftp" browse-url ":"] 5 "\n\n(fn URL)"])
                       ("help" :follow org-link--open-help)
                       ("http" :follow
                        #[257 "\301\300\302 Q!\207" ["http" browse-url ":"] 5 "\n\n(fn URL)"])
                       ("https" :follow
                        #[257 "\301\300\302 Q!\207" ["https" browse-url ":"] 5 "\n\n(fn URL)"])
                       ("mailto" :follow
                        #[257 "\301\300\302 Q!\207" ["mailto" browse-url ":"] 5 "\n\n(fn URL)"])
                       ("news" :follow
                        #[257 "\301\300\302 Q!\207" ["news" browse-url ":"] 5 "\n\n(fn URL)"])
                       ("shell" :follow org-link--open-shell))
 org-agenda-skip-scheduled-if-done t
 org-latex-format-headline-function 'org-latex-format-headline-default-function
 org-link-email-description-format "Email %c: %.30s"
 org-capture-templates '(("t" "Task" entry (file+headline "~/mise/TODO" "File Me")
                          "*** UNINIT'D %^{Summary}\n    /Captured %U/\n    %?\n")
                         ("s" "Snippet" plain (file+olp+datetree "~/mise/TODO" "Snippets")
                          "        * %?" :empty-lines-after 1 :tree-type week)
                         ("j" "Journal" plain (file+olp+datetree "~/mise/NOTES") "      %?"
                          :empty-lines-after 2)
                         ("n" "Note" plain (file+headline "~/mise/NOTES" "Notes")
                          "  * %<%Y-%m-%d> -- %?" :empty-lines-after 1 :prepend t)
                         )
 org-link-elisp-confirm-function 'yes-or-no-p
 org-latex-format-inlinetask-function 'org-latex-format-inlinetask-default-function
 org-html-format-drawer-function '(closure
                                   (htmlize-buffer-places org-html-format-table-no-css
                                    htmlize-css-name-prefix htmlize-output-type htmlize-output-type
                                    htmlize-css-name-prefix t)
                                   (_name contents) contents)
 org-clocktable-defaults '(:maxlevel 2 :lang "en" :scope file :block nil :wstart 1 :mstart 1 :tstart
                           nil :tend nil :step nil :stepskip0 nil :fileskip0 nil :tags nil :match
                           nil :emphasize nil :link nil :narrow 40! :indent t :formula nil
                           :timestamp nil :level nil :tcolumns nil :formatter nil)
 org-html-format-headline-function 'org-html-format-headline-default-function
 org-confirm-babel-evaluate nil
 org-agenda-skip-deadline-if-done t
 )