diff --git a/html/changelogs/Bat-eventareanames.yml b/html/changelogs/Bat-eventareanames.yml
deleted file mode 100644
index 02dd70f91bc..00000000000
--- a/html/changelogs/Bat-eventareanames.yml
+++ /dev/null
@@ -1,60 +0,0 @@
-################################
-# Example Changelog File
-#
-# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
-#
-# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
-# When it is, any changes listed below will disappear.
-#
-# Valid Prefixes:
-# bugfix
-# - (fixes bugs)
-# wip
-# - (work in progress)
-# qol
-# - (quality of life)
-# soundadd
-# - (adds a sound)
-# sounddel
-# - (removes a sound)
-# rscadd
-# - (adds a feature)
-# rscdel
-# - (removes a feature)
-# imageadd
-# - (adds an image or sprite)
-# imagedel
-# - (removes an image or sprite)
-# spellcheck
-# - (fixes spelling or grammar)
-# experiment
-# - (experimental change)
-# balance
-# - (balance changes)
-# code_imp
-# - (misc internal code change)
-# refactor
-# - (refactors code)
-# config
-# - (makes a change to the config files)
-# admin
-# - (makes changes to administrator tools)
-# server
-# - (miscellaneous changes to server)
-#################################
-
-# Your name.
-author: Batrachophrenoboocosmomachia
-
-# Optional: Remove this file after generating master changelog. Useful for PR changelogs that won't get used again.
-delete-after: True
-
-# Any changes you've made. See valid prefix list above.
-# INDENT WITH TWO SPACES. NOT TABS. SPACES.
-# SCREW THIS UP AND IT WON'T WORK.
-# Also, this gets changed to [] after reading. Just remove the brackets when you add new shit.
-# Please surround your changes in double quotes ("). It works without them, but if you use certain characters it screws up compiling. The quotes will not show up in the changelog.
-changes:
- - bugfix: "Alarm Monitoring app now correctly provides full area names."
- - bugfix: "Infestation event announcement now correctly provides full area name."
- - bugfix: "Supply Drop event announcement now correctly provides full area name."
diff --git a/html/changelogs/Ben10083 - Crescent Expanse Cargo.yml b/html/changelogs/Ben10083 - Crescent Expanse Cargo.yml
deleted file mode 100644
index b6e39edc6a6..00000000000
--- a/html/changelogs/Ben10083 - Crescent Expanse Cargo.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-################################
-# Example Changelog File
-#
-# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
-#
-# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
-# When it is, any changes listed below will disappear.
-#
-# Valid Prefixes:
-# bugfix
-# - (fixes bugs)
-# wip
-# - (work in progress)
-# qol
-# - (quality of life)
-# soundadd
-# - (adds a sound)
-# sounddel
-# - (removes a sound)
-# rscadd
-# - (adds a feature)
-# rscdel
-# - (removes a feature)
-# imageadd
-# - (adds an image or sprite)
-# imagedel
-# - (removes an image or sprite)
-# spellcheck
-# - (fixes spelling or grammar)
-# experiment
-# - (experimental change)
-# balance
-# - (balance changes)
-# code_imp
-# - (misc internal code change)
-# refactor
-# - (refactors code)
-# config
-# - (makes a change to the config files)
-# admin
-# - (makes changes to administrator tools)
-# server
-# - (miscellaneous changes to server)
-#################################
-
-# Your name.
-author: Ben10083
-
-# Optional: Remove this file after generating master changelog. Useful for PR changelogs that won't get used again.
-delete-after: True
-
-# Any changes you've made. See valid prefix list above.
-# INDENT WITH TWO SPACES. NOT TABS. SPACES.
-# SCREW THIS UP AND IT WON'T WORK.
-# Also, this gets changed to [] after reading. Just remove the brackets when you add new shit.
-# Please surround your changes in double quotes ("). It works without them, but if you use certain characters it screws up compiling. The quotes will not show up in the changelog.
-changes:
- - bugfix: "Adds missing cargo supplier coefficents to Crescent Expanse (everything is unaffordable, just like real life)."
diff --git a/html/changelogs/archive/2025-09.yml b/html/changelogs/archive/2025-09.yml
new file mode 100644
index 00000000000..6feea99acc7
--- /dev/null
+++ b/html/changelogs/archive/2025-09.yml
@@ -0,0 +1,11 @@
+2025-09-01:
+ Batrachophrenoboocosmomachia:
+ - bugfix: Alarm Monitoring app now correctly provides full area names.
+ - bugfix: Infestation event announcement now correctly provides full area name.
+ - bugfix: Supply Drop event announcement now correctly provides full area name.
+ Ben10083:
+ - bugfix: Adds missing cargo supplier coefficents to Crescent Expanse (everything
+ is unaffordable, just like real life).
+ MattAtlas:
+ - bugfix: Fixes armour penetration not working on mechs when hit with a melee weapon
+ or by simple mobs.
diff --git a/html/changelogs/mattatlas-aintnothingbutaparty.yml b/html/changelogs/mattatlas-aintnothingbutaparty.yml
deleted file mode 100644
index a901c03a199..00000000000
--- a/html/changelogs/mattatlas-aintnothingbutaparty.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-################################
-# Example Changelog File
-#
-# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
-#
-# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
-# When it is, any changes listed below will disappear.
-#
-# Valid Prefixes:
-# bugfix
-# - (fixes bugs)
-# wip
-# - (work in progress)
-# qol
-# - (quality of life)
-# soundadd
-# - (adds a sound)
-# sounddel
-# - (removes a sound)
-# rscadd
-# - (adds a feature)
-# rscdel
-# - (removes a feature)
-# imageadd
-# - (adds an image or sprite)
-# imagedel
-# - (removes an image or sprite)
-# spellcheck
-# - (fixes spelling or grammar)
-# experiment
-# - (experimental change)
-# balance
-# - (balance changes)
-# code_imp
-# - (misc internal code change)
-# refactor
-# - (refactors code)
-# config
-# - (makes a change to the config files)
-# admin
-# - (makes changes to administrator tools)
-# server
-# - (miscellaneous changes to server)
-#################################
-
-# Your name.
-author: MattAtlas
-
-# Optional: Remove this file after generating master changelog. Useful for PR changelogs that won't get used again.
-delete-after: True
-
-# Any changes you've made. See valid prefix list above.
-# INDENT WITH TWO SPACES. NOT TABS. SPACES.
-# SCREW THIS UP AND IT WON'T WORK.
-# Also, this gets changed to [] after reading. Just remove the brackets when you add new shit.
-# Please surround your changes in double quotes ("). It works without them, but if you use certain characters it screws up compiling. The quotes will not show up in the changelog.
-changes:
- - bugfix: "Fixes armour penetration not working on mechs when hit with a melee weapon or by simple mobs."