diff --git a/server/package.json b/server/package.json
index 9f661f00d..da689d1ad 100644
--- a/server/package.json
+++ b/server/package.json
@@ -74,7 +74,7 @@
 		"redis": "3.1.2",
 		"rimraf": "3.0.2",
 		"safe-json-stringify": "1.2.0",
-		"tachi-common": "0.2.25",
+		"tachi-common": "0.2.19",
 		"typescript": "4.3.4",
 		"winston": "3.3.3",
 		"winston-transport": "^4.4.0"
diff --git a/server/scripts/quick-insert/quick-insert.ts b/server/scripts/quick-insert/quick-insert.ts
index ec6b7c994..93cdfc713 100644
--- a/server/scripts/quick-insert/quick-insert.ts
+++ b/server/scripts/quick-insert/quick-insert.ts
@@ -4,7 +4,7 @@ import { ChartDocument, IDStrings } from "tachi-common";
 import { Random20Hex } from "utils/misc";
 
 export async function QuickInsert<I extends IDStrings>(
-	base: ChartDocument<I>,
+	base: Omit<ChartDocument<I>, "chartID">,
 	content: Partial<ChartDocument<I>>[],
 	coll: ICollection
 ) {
diff --git a/server/scripts/single-use/convert-2dxtra-charts.ts b/server/scripts/single-use/convert-2dxtra-charts.ts
new file mode 100644
index 000000000..ee9328382
--- /dev/null
+++ b/server/scripts/single-use/convert-2dxtra-charts.ts
@@ -0,0 +1,71 @@
+/* eslint-disable no-await-in-loop */
+import db from "external/mongo/db";
+import { rootLogger } from "lib/logger/logger";
+import { ChartDocument, Difficulties } from "tachi-common";
+import { FindIIDXChartOnInGameID } from "utils/queries/charts";
+
+async function ConvertChart(chart: ChartDocument<"iidx:SP" | "iidx:DP">) {
+	// We need to get the related official song. The best way to do this is
+	// probably with song IDs.
+
+	const originalChart = await FindIIDXChartOnInGameID(
+		chart.data.inGameID,
+		chart.playtype,
+		chart.difficulty
+	);
+
+	if (!originalChart) {
+		rootLogger.error(`Can't find original chart.`, { chart });
+		throw new Error(`Can't find original chart.`);
+	}
+
+	return {
+		difficulty: `${chart.data["2dxtraSet"]!} ${chart.difficulty}` as Difficulties[
+			| "iidx:SP"
+			| "iidx:DP"],
+		songID: originalChart!.songID,
+	};
+}
+
+if (require.main === module) {
+	(async () => {
+		const modCharts = (await db.charts.iidx.find({
+			"data.2dxtraSet": { $ne: null },
+			difficulty: { $in: ["BEGINNER", "NORMAL", "HYPER", "ANOTHER", "LEGGENDARIA"] },
+		})) as ChartDocument<"iidx:SP" | "iidx:DP">[];
+
+		rootLogger.info(`Modifying ${modCharts.length} charts.`);
+
+		for (const chart of modCharts) {
+			const setDoc = await ConvertChart(chart);
+
+			await db.charts.iidx.update(
+				{
+					chartID: chart.chartID,
+				},
+				{ $set: setDoc }
+			);
+
+			// We're also going to have to port over old scores.
+
+			await db.scores.update(
+				{
+					chartID: chart.chartID,
+				},
+				{
+					$set: {
+						songID: setDoc.songID,
+					},
+				}
+			);
+		}
+
+		rootLogger.info(`Removing ${modCharts.length} songs.`);
+
+		await db.songs.iidx.remove({
+			songID: { $in: modCharts.map((e) => e.songID) },
+		});
+
+		rootLogger.info(`Done.`);
+	})();
+}