diff --git a/apps/frontend/src/components/ui/moderation/ModpackScanModal.vue b/apps/frontend/src/components/ui/moderation/ModpackScanModal.vue
index c3057c955c..861b6b04ca 100644
--- a/apps/frontend/src/components/ui/moderation/ModpackScanModal.vue
+++ b/apps/frontend/src/components/ui/moderation/ModpackScanModal.vue
@@ -400,10 +400,10 @@ defineExpose({ show, hide })
 					</Combobox>
 					<IconButton
 						v-tooltip="formatMessage(messages.deleteAllGroups)"
-						type="quiet"
-						color="red"
+						type="base"
 						:label="formatMessage(messages.deleteAllGroups)"
 						:disabled="titleButtonsDisabled"
+						class="[&:not(:disabled):focus-visible>svg]:!text-red [&:not(:disabled):hover>svg]:!text-red"
 						@click="showConfirmClearGroups"
 					>
 						<TrashIcon v-if="!isClearing" aria-hidden="true" />
diff --git a/apps/frontend/src/locales/en-US/index.json b/apps/frontend/src/locales/en-US/index.json
index e292787b2f..7b62ba3d2a 100644
--- a/apps/frontend/src/locales/en-US/index.json
+++ b/apps/frontend/src/locales/en-US/index.json
@@ -3458,6 +3458,12 @@
   "project.actions.back-to-project-page": {
     "message": "Back to project page"
   },
+  "project.actions.check-modpack-archives": {
+    "message": "Check modpack unzip"
+  },
+  "project.actions.checking-modpack-archives": {
+    "message": "Checking..."
+  },
   "project.actions.create-server": {
     "message": "Create a server"
   },
@@ -3743,9 +3749,24 @@
   "project.moderation.title": {
     "message": "Moderation"
   },
+  "project.modpack-archive-warning.description": {
+    "message": "Importing this .mrpack might be broken."
+  },
+  "project.modpack-archive-warning.title": {
+    "message": "This modpack was published during export bug"
+  },
   "project.navigation.changelog": {
     "message": "Changelog"
   },
+  "project.notification.check-modpack-archives.failed": {
+    "message": "Some modpack files could not be unzipped"
+  },
+  "project.notification.check-modpack-archives.no-files": {
+    "message": "No .mrpack files were found for this project."
+  },
+  "project.notification.check-modpack-archives.success": {
+    "message": "{count, plural, one {The modpack file can be unzipped.} other {All # modpack files can be unzipped.}}"
+  },
   "project.notification.icon-updated.message": {
     "message": "Your project's icon has been updated."
   },
diff --git a/apps/frontend/src/pages/[type]/[project].vue b/apps/frontend/src/pages/[type]/[project].vue
index 9c15b18da1..561552f917 100644
--- a/apps/frontend/src/pages/[type]/[project].vue
+++ b/apps/frontend/src/pages/[type]/[project].vue
@@ -405,6 +405,36 @@
 						:auth="auth"
 						:tags="tags"
 					/>
+					<Admonition
+						v-if="
+							auth.user &&
+							tags.staffRoles.includes(auth.user.role) &&
+							project.actualProjectType === 'modpack' &&
+							hasModpackArchiveInWarningWindow
+						"
+						type="warning"
+						:header="formatMessage(messages.modpackArchiveWarningTitle)"
+						class="mt-3"
+					>
+						{{ formatMessage(messages.modpackArchiveWarningDescription) }}
+						<template #actions>
+							<Button
+								type="colored"
+								color="orange"
+								:loading="isCheckingModpackArchives"
+								@click="checkModpackArchives"
+							>
+								<FileArchiveIcon />
+								{{
+									formatMessage(
+										isCheckingModpackArchives
+											? messages.checkingModpackArchives
+											: messages.checkModpackArchives,
+									)
+								}}
+							</Button>
+						</template>
+					</Admonition>
 					<Admonition
 						v-if="
 							currentMember &&
@@ -529,6 +559,7 @@ import {
 	ClipboardCopyIcon,
 	CompassIcon,
 	DownloadIcon,
+	FileArchiveIcon,
 	FolderSearchIcon,
 	HeartIcon,
 	LeftArrowIcon,
@@ -663,6 +694,7 @@ const downloadModal = ref()
 const openInAppModal = ref()
 const overTheTopDownloadAnimation = ref()
 const scanModal = ref()
+const isCheckingModpackArchives = ref(false)
 
 const projectV3Loaded = computed(() => !projectV3Pending.value || projectV3.value != null)
 const isServerProject = computed(() => projectV3.value?.minecraft_server != null)
@@ -818,6 +850,35 @@ const messages = defineMessages({
 		id: 'project.actions.rescan-modpack',
 		defaultMessage: 'Rescan modpack',
 	},
+	checkModpackArchives: {
+		id: 'project.actions.check-modpack-archives',
+		defaultMessage: 'Check modpack unzip',
+	},
+	checkingModpackArchives: {
+		id: 'project.actions.checking-modpack-archives',
+		defaultMessage: 'Checking...',
+	},
+	checkModpackArchivesSuccess: {
+		id: 'project.notification.check-modpack-archives.success',
+		defaultMessage:
+			'{count, plural, one {The modpack file can be unzipped.} other {All # modpack files can be unzipped.}}',
+	},
+	checkModpackArchivesFailed: {
+		id: 'project.notification.check-modpack-archives.failed',
+		defaultMessage: 'Some modpack files could not be unzipped',
+	},
+	checkModpackArchivesNoFiles: {
+		id: 'project.notification.check-modpack-archives.no-files',
+		defaultMessage: 'No .mrpack files were found for this project.',
+	},
+	modpackArchiveWarningTitle: {
+		id: 'project.modpack-archive-warning.title',
+		defaultMessage: 'This modpack was published during export bug',
+	},
+	modpackArchiveWarningDescription: {
+		id: 'project.modpack-archive-warning.description',
+		defaultMessage: 'Importing this .mrpack might be broken.',
+	},
 	serversPromoDescription: {
 		id: 'project.actions.servers-promo.description',
 		defaultMessage: 'Modrinth Hosting is the easiest way to play with your friends without hassle!',
@@ -1135,7 +1196,7 @@ const {
 
 const dependencies = computed(() => dependenciesRaw.value ?? null)
 
-// V3 Versions - lazy loaded client-side only
+// V3 Versions - lazy loaded client-side only (except for staff, who need v3 versions for moderation)
 const versionsEnabled = ref(false)
 const {
 	data: versionsV3,
@@ -1149,7 +1210,7 @@ const {
 			apiVersion: 3,
 		}),
 	staleTime: STALE_TIME_LONG,
-	enabled: computed(() => !!projectId.value && versionsEnabled.value),
+	enabled: computed(() => !!projectId.value && (versionsEnabled.value || isStaff(auth.value.user))),
 })
 
 // Organization
@@ -1749,6 +1810,90 @@ const showProjectHeaderCreateServerAction = computed(
 const projectHeaderCreateServerTo = computed(() =>
 	project.value ? `/hosting?project=${project.value.id}#plan` : '/hosting',
 )
+
+const MRPACK_ARCHIVE_WARNING_START = new Date('2026-08-10T17:00:00.000Z').getTime()
+const MRPACK_ARCHIVE_WARNING_END = new Date('2026-08-13T20:00:00.000Z').getTime()
+const hasModpackArchiveInWarningWindow = computed(() =>
+	(versionsV3.value ?? []).some((version) => {
+		const publishedAt = new Date(version.date_published).getTime()
+		return (
+			version.files.some((file) => file.filename.toLowerCase().endsWith('.mrpack')) &&
+			publishedAt >= MRPACK_ARCHIVE_WARNING_START &&
+			publishedAt <= MRPACK_ARCHIVE_WARNING_END
+		)
+	}),
+)
+
+async function checkModpackArchives() {
+	if (!project.value || isCheckingModpackArchives.value) return
+
+	isCheckingModpackArchives.value = true
+	startLoading()
+
+	try {
+		const versions = await client.labrinth.versions_v2.getProjectVersions(project.value.id)
+		const filesByUrl = new Map(
+			versions
+				.flatMap((version) => version.files)
+				.filter((file) => file.filename.toLowerCase().endsWith('.mrpack'))
+				.map((file) => [file.url, file]),
+		)
+		const files = [...filesByUrl.values()]
+
+		if (files.length === 0) {
+			addNotification({
+				title: formatMessage(commonMessages.errorNotificationTitle),
+				text: formatMessage(messages.checkModpackArchivesNoFiles),
+				type: 'error',
+			})
+			return
+		}
+
+		const { default: JSZip } = await import('jszip')
+		const failures = []
+
+		for (const file of files) {
+			try {
+				const response = await fetch(file.url)
+				if (!response.ok) {
+					throw new Error(`Download failed (${response.status} ${response.statusText})`)
+				}
+
+				await JSZip.loadAsync(await response.blob(), { checkCRC32: true })
+			} catch (error) {
+				failures.push({
+					filename: file.filename,
+					error: error?.message ?? String(error),
+				})
+			}
+		}
+
+		if (failures.length > 0) {
+			addNotification({
+				title: formatMessage(messages.checkModpackArchivesFailed),
+				text: failures.map((failure) => `${failure.filename}: ${failure.error}`).join('\n'),
+				type: 'error',
+			})
+			return
+		}
+
+		addNotification({
+			title: formatMessage(commonMessages.successLabel),
+			text: formatMessage(messages.checkModpackArchivesSuccess, { count: files.length }),
+			type: 'success',
+		})
+	} catch (error) {
+		addNotification({
+			title: formatMessage(commonMessages.errorNotificationTitle),
+			text: error?.data?.description ?? error?.message ?? String(error),
+			type: 'error',
+		})
+	} finally {
+		isCheckingModpackArchives.value = false
+		stopLoading()
+	}
+}
+
 const projectHeaderMoreActions = computed(() => {
 	const isStaff = !!(auth.value.user && tags.value.staffRoles.includes(auth.value.user.role))
 
@@ -1787,6 +1932,19 @@ const projectHeaderMoreActions = computed(() => {
 			tone: 'orange',
 			shown: !!auth.value.user && isStaff && project.value?.actualProjectType === 'modpack',
 		},
+		{
+			id: 'moderation-modpack-check-archives',
+			label: formatMessage(
+				isCheckingModpackArchives.value
+					? messages.checkingModpackArchives
+					: messages.checkModpackArchives,
+			),
+			icon: FileArchiveIcon,
+			action: checkModpackArchives,
+			tone: 'orange',
+			disabled: isCheckingModpackArchives.value,
+			shown: !!auth.value.user && isStaff && project.value?.actualProjectType === 'modpack',
+		},
 		{ type: 'divider', shown: !!auth.value.user && isStaff },
 		{
 			id: 'report',