diff --git a/d2m/converters/edit-to-changes.js b/d2m/converters/edit-to-changes.js
index c80bb497..6bb22106 100644
--- a/d2m/converters/edit-to-changes.js
+++ b/d2m/converters/edit-to-changes.js
@@ -24,14 +24,13 @@ function eventCanBeEdited(ev) {
 
 /**
  * @param {import("discord-api-types/v10").GatewayMessageCreateDispatchData} message
- * IMPORTANT: This may not have all the normal fields! The API documentation doesn't provide possible types, just says it's all optional!
- * Since I don't have a spec, I will have to capture some real traffic and add it as test cases... I hope they don't change anything later...
  * @param {import("discord-api-types/v10").APIGuild} guild
  * @param {import("../../matrix/api")} api simple-as-nails dependency injection for the matrix API
  */
 async function editToChanges(message, guild, api) {
 	// If it is a user edit, allow deleting old messages (e.g. they might have removed text from an image).
 	// If it is the system adding a generated embed to a message, don't delete old messages since the system only sends partial data.
+	// Since an update in August 2024, the system always provides the full data of message updates. I'll leave in the old code since it won't cause problems.
 
 	const isGeneratedEmbed = !("content" in message)
 
diff --git a/d2m/converters/edit-to-changes.test.js b/d2m/converters/edit-to-changes.test.js
index b00a2c40..1d8b7300 100644
--- a/d2m/converters/edit-to-changes.test.js
+++ b/d2m/converters/edit-to-changes.test.js
@@ -270,3 +270,44 @@ test("edit2changes: generated embed", async t => {
 	t.equal(senderMxid, "@_ooye_cadence:cadence.moe")
 	t.equal(called, 1)
 })
+
+test("edit2changes: generated embed on a reply", async t => {
+	const {senderMxid, eventsToRedact, eventsToReplace, eventsToSend, promotions} = await editToChanges(data.message_update.embed_generated_on_reply, data.guild.general, {})
+	t.deepEqual(eventsToRedact, [])
+	t.deepEqual(eventsToReplace, [{
+		oldID: "$UTqiL3Zj3FC4qldxRLggN1fhygpKl8sZ7XGY5f9MNbF",
+		newContent: {
+			$type: "m.room.message",
+			// Unfortunately the edited message doesn't include the message_reference field. Fine. Whatever. It looks normal if you're using a good client.
+			body: "> a Discord user: [Replied-to message content wasn't provided by Discord]"
+				+ "\n\n* https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM",
+			format: "org.matrix.custom.html",
+			formatted_body: "<mx-reply><blockquote><a href=\"https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM\">In reply to</a> a Discord user<br>[Replied-to message content wasn't provided by Discord]</blockquote></mx-reply>* <a href=\"https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM\">https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM</a>",
+			"m.mentions": {},
+			"m.new_content": {
+				body: "https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM",
+				format: "org.matrix.custom.html",
+				formatted_body: "<a href=\"https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM\">https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM</a>",
+				"m.mentions": {},
+				msgtype: "m.text",
+			},
+			"m.relates_to": {
+				event_id: "$UTqiL3Zj3FC4qldxRLggN1fhygpKl8sZ7XGY5f9MNbF",
+				rel_type: "m.replace",
+			},
+			msgtype: "m.text",
+		},
+	}])
+	t.deepEqual(eventsToSend, [{
+		$type: "m.room.message",
+		msgtype: "m.notice",
+		body: "| ## Matrix - Decentralised and secure communication https://matrix.to/"
+			+ "\n| \n| You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation",
+		format: "org.matrix.custom.html",
+		formatted_body: `<blockquote><p><strong><a href="https://matrix.to/">Matrix - Decentralised and secure communication</a></strong>`
+			+ `</p><p>You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation</p></blockquote>`,
+		"m.mentions": {}
+	}])
+	t.deepEqual(promotions, []) // TODO: it would be ideal to promote this to reaction_part = 0. this is OK to do because the main message won't have had any reactions yet.
+	t.equal(senderMxid, "@_ooye_cadence:cadence.moe")
+})
diff --git a/test/data.js b/test/data.js
index 456033a3..058a9929 100644
--- a/test/data.js
+++ b/test/data.js
@@ -1990,6 +1990,91 @@ module.exports = {
 			edited_timestamp: null,
 			flags: 0,
 			components: []
+		},
+		embed_will_be_generated_on_reply: {
+			type: 19,
+			content: "https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM",
+			mentions: [],
+			mention_roles: [],
+			attachments: [],
+			embeds: [
+				{
+					type: "link",
+					url: "https://matrix.to/",
+					title: "Matrix - Decentralised and secure communication",
+					description: "You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation",
+					reference_id: "1278002262400176128",
+					thumbnail: {
+						url: "https://matrix.org/blog/img/matrix-logo.png",
+						proxy_url: "https://images-ext-1.discordapp.net/external/3yPmfN-_U_7Xn8hLSG77nY9IvdtITH0GPrB6OX3JjEI/https/matrix.org/blog/img/matrix-logo.png",
+						width: 800,
+						height: 400,
+						placeholder: "OAgOBIComJeHeId/dXgAAAAAAA==",
+						placeholder_version: 1
+					}
+				}
+			],
+			timestamp: "2024-08-27T14:44:43.490000+00:00",
+			edited_timestamp: null,
+			flags: 0,
+			components: [],
+			id: "1278002262400176128",
+			channel_id: "1100319550446252084",
+			author: {
+				id: "772659086046658620",
+				username: "cadence.worm",
+				avatar: "4b5c4b28051144e4c111f0113a0f1cf1",
+				discriminator: "0",
+				public_flags: 0,
+				flags: 0,
+				banner: null,
+				accent_color: null,
+				global_name: "cadence",
+				avatar_decoration_data: null,
+				banner_color: null,
+				clan: null
+			},
+			pinned: false,
+			mention_everyone: false,
+			tts: false,
+			message_reference: {
+				type: 0,
+				channel_id: "1100319550446252084",
+				message_id: "1278001833876525057",
+				guild_id: "1100319549670301727"
+			},
+			position: 0,
+			referenced_message: {
+				type: 0,
+				content: "b",
+				mentions: [],
+				mention_roles: [],
+				attachments: [],
+				embeds: [],
+				timestamp: "2024-08-27T14:43:01.322000+00:00",
+				edited_timestamp: "2024-08-27T14:43:06.277000+00:00",
+				flags: 0,
+				components: [],
+				id: "1278001833876525057",
+				channel_id: "1100319550446252084",
+				author: {
+					id: "772659086046658620",
+					username: "cadence.worm",
+					avatar: "4b5c4b28051144e4c111f0113a0f1cf1",
+					discriminator: "0",
+					public_flags: 0,
+					flags: 0,
+					banner: null,
+					accent_color: null,
+					global_name: "cadence",
+					avatar_decoration_data: null,
+					banner_color: null,
+					clan: null
+				},
+				pinned: false,
+				mention_everyone: false,
+				tts: false
+			}
 		}
 	},
 	pk_message: {
@@ -3709,6 +3794,70 @@ module.exports = {
 			],
 			guild_id: "112760669178241024",
 			id: "1210387798297682020"
+		},
+		embed_generated_on_reply: {
+			attachments: [],
+			author: {
+				avatar: "4b5c4b28051144e4c111f0113a0f1cf1",
+				avatar_decoration_data: null,
+				clan: null,
+				discriminator: "0",
+				global_name: "cadence",
+				id: "772659086046658620",
+				public_flags: 0,
+				username: "cadence.worm"
+			},
+			channel_id: "1100319550446252084",
+			components: [],
+			content: "https://matrix.to/#/!BnKuBPCvyfOkhcUjEu:cadence.moe/$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM",
+			edited_timestamp: null,
+			embeds: [
+				{
+					description: "You're invited to talk on Matrix. If you don't already have a client this link will help you pick one, and join the conversation. If you already have one, this link will help you join the conversation",
+					reference_id: "1278002262400176128",
+					thumbnail: {
+						height: 400,
+						placeholder: "OAgOBIComJeHeId/dXgAAAAAAA==",
+						placeholder_version: 1,
+						proxy_url: "https://images-ext-1.discordapp.net/external/3yPmfN-_U_7Xn8hLSG77nY9IvdtITH0GPrB6OX3JjEI/https/matrix.org/blog/img/matrix-logo.png",
+						url: "https://matrix.org/blog/img/matrix-logo.png",
+						width: 800
+					},
+					title: "Matrix - Decentralised and secure communication",
+					type: "link",
+					url: "https://matrix.to/"
+				}
+			],
+			flags: 0,
+			guild_id: "1100319549670301727",
+			id: "1278002262400176128",
+			member: {
+				avatar: null,
+				banner: null,
+				communication_disabled_until: null,
+				deaf: false,
+				flags: 0,
+				joined_at: "2023-04-25T07:17:03.696000+00:00",
+				mute: false,
+				nick: "worm",
+				pending: false,
+				premium_since: null,
+				roles: []
+			},
+			mention_everyone: false,
+			mention_roles: [],
+			mentions: [],
+			message_reference: {
+				channel_id: "1100319550446252084",
+				guild_id: "1100319549670301727",
+				message_id: "1278001833876525057",
+				type: 0
+			},
+			pinned: false,
+			position: 0,
+			timestamp: "2024-08-27T14:44:43.490000+00:00",
+			tts: false,
+			type: 19
 		}
 	},
 	special_message: {
diff --git a/test/ooye-test-data.sql b/test/ooye-test-data.sql
index 4666b4d8..07be17f0 100644
--- a/test/ooye-test-data.sql
+++ b/test/ooye-test-data.sql
@@ -24,13 +24,15 @@ INSERT INTO sim (user_id, sim_name, localpart, mxid) VALUES
 ('111604486476181504', 'kyuugryphon', '_ooye_kyuugryphon', '@_ooye_kyuugryphon:cadence.moe'),
 ('1109360903096369153', 'amanda', '_ooye_amanda', '@_ooye_amanda:cadence.moe'),
 ('43d378d5-1183-47dc-ab3c-d14e21c3fe58', '_pk_zoego', '_ooye__pk_zoego', '@_ooye__pk_zoego:cadence.moe'),
-('320067006521147393', 'papiophidian', '_ooye_papiophidian', '@_ooye_papiophidian:cadence.moe');
+('320067006521147393', 'papiophidian', '_ooye_papiophidian', '@_ooye_papiophidian:cadence.moe'),
+('772659086046658620', 'cadence', '_ooye_cadence', '@_ooye_cadence:cadence.moe');
 
 INSERT INTO sim_proxy (user_id, proxy_owner_id, displayname) VALUES
 ('43d378d5-1183-47dc-ab3c-d14e21c3fe58', '196188877885538304', 'Azalea &flwr; 🌺');
 
 INSERT INTO sim_member (mxid, room_id, hashed_profile_content) VALUES
-('@_ooye_bojack_horseman:cadence.moe', '!hYnGGlPHlbujVVfktC:cadence.moe', NULL);
+('@_ooye_bojack_horseman:cadence.moe', '!hYnGGlPHlbujVVfktC:cadence.moe', NULL),
+('@_ooye_cadence:cadence.moe', '!BnKuBPCvyfOkhcUjEu:cadence.moe', NULL);
 
 INSERT INTO message_channel (message_id, channel_id) VALUES
 ('1106366167788044450', '122155380120748034'),
@@ -57,7 +59,9 @@ INSERT INTO message_channel (message_id, channel_id) VALUES
 ('1207486471489986620', '1160894080998461480'),
 ('1210387798297682020', '112760669178241024'),
 ('1273204543739396116', '687028734322147344'),
-('1273743950028607530', '1100319550446252084');
+('1273743950028607530', '1100319550446252084'),
+('1278002262400176128', '1100319550446252084'),
+('1278001833876525057', '1100319550446252084');
 
 INSERT INTO event_message (event_id, event_type, event_subtype, message_id, part, reaction_part, source) VALUES
 ('$X16nfVks1wsrhq4E9SSLiqrf2N8KD0erD0scZG7U5xg', 'm.room.message', 'm.text', '1126786462646550579', 0, 0, 1),
@@ -94,7 +98,9 @@ INSERT INTO event_message (event_id, event_type, event_subtype, message_id, part
 ('$OEEK-Wam2FTh6J-6kVnnJ6KnLA_lLRnLTHatKKL62-Y', 'm.room.message', 'm.image', '1207486471489986620', 0, 0, 0),
 ('$mPSzglkCu-6cZHbYro0RW2u5mHvbH9aXDjO5FCzosc0', 'm.room.message', 'm.text', '1210387798297682020', 0, 0, 1),
 ('$qmyjr-ISJtnOM5WTWLI0fT7uSlqRLgpyin2d2NCglCU', 'm.room.message', 'm.text', '1273204543739396116', 0, 0, 0),
-('$W1nsDhNIojWrcQOdnOD9RaEvrz2qyZErQoNhPRs1nK4', 'm.room.message', 'm.text', '1273743950028607530', 0, 0, 0);
+('$W1nsDhNIojWrcQOdnOD9RaEvrz2qyZErQoNhPRs1nK4', 'm.room.message', 'm.text', '1273743950028607530', 0, 0, 0),
+('$UTqiL3Zj3FC4qldxRLggN1fhygpKl8sZ7XGY5f9MNbF', 'm.room.message', 'm.text', '1278002262400176128', 0, 0, 1),
+('$aLVZyiC3HlOu-prCSIaXlQl68I8leUdnPFiCwkgn6qM', 'm.room.message', 'm.text', '1278001833876525057', 0, 0, 1);
 
 INSERT INTO file (discord_url, mxc_url) VALUES
 ('https://cdn.discordapp.com/attachments/497161332244742154/1124628646431297546/image.png', 'mxc://cadence.moe/qXoZktDqNtEGuOCZEADAMvhM'),