diff --git a/server/src/scripts/__KT_DATABASE_MIGRATION/charts-iidx.ts b/server/src/scripts/__KT_DATABASE_MIGRATION/charts-iidx.ts
index 46c1b0034..6719018f6 100644
--- a/server/src/scripts/__KT_DATABASE_MIGRATION/charts-iidx.ts
+++ b/server/src/scripts/__KT_DATABASE_MIGRATION/charts-iidx.ts
@@ -21,8 +21,7 @@ function ConvertFn(c: any): ChartDocument<"iidx:SP" | "iidx:DP"> {
             "N-1": c.flags["N-1"],
         },
         data: {
-            inGameID: c.internals.inGameID,
-            inGameINTID: c.internals.inGameINTID,
+            inGameID: c.internals.inGameINTID,
             notecount: c.notedata.notecount,
         },
     };
@@ -34,12 +33,10 @@ function ConvertFn(c: any): ChartDocument<"iidx:SP" | "iidx:DP"> {
         newChartDoc.length = `${m}:${s}`;
     }
 
-    if (c.bpmMin && c.bpmMax) {
-        if (c.monoBPM) {
-            newChartDoc.bpmString = c.bpmMin;
-        } else {
-            newChartDoc.bpmString = `${c.bpmMin}-${c.bpmMax}`;
-        }
+    if (c.monoBPM) {
+        newChartDoc.bpmString = c.bpmMin.toString();
+    } else {
+        newChartDoc.bpmString = `${c.bpmMin}-${c.bpmMax}`;
     }
 
     if (newChartDoc.length === null) {
diff --git a/server/src/scripts/validate-database.ts b/server/src/scripts/validate-database.ts
index 7d7c90267..40f219351 100644
--- a/server/src/scripts/validate-database.ts
+++ b/server/src/scripts/validate-database.ts
@@ -1,6 +1,6 @@
 import Prudence, { PrudenceSchema } from "prudence";
 import db from "../db/db";
-import { PRUDENCE_SCORE_SCHEMAS, STATIC_SCHEMAS } from "../db/schemas";
+import { PRUDENCE_CHART_SCHEMAS, PRUDENCE_SCORE_SCHEMAS, STATIC_SCHEMAS } from "../db/schemas";
 import CreateLogCtx from "../logger";
 import fs from "fs";
 import path from "path";
@@ -9,11 +9,15 @@ import { supportedGames, validPlaytypes } from "kamaitachi-common/js/config";
 
 const BASE_DIR = path.join(__dirname, "./validate-database-errs");
 
+// note: a hell of a lot of this code is copy pasted
+// this is just a script, so, feel free to refactor it.
+
 const logger = CreateLogCtx("validate-database.ts");
 
 async function ValidateStaticSchemas(): Promise<void> {
     for (const x in STATIC_SCHEMAS) {
-        const c = x as keyof typeof db;
+        const c = x as keyof typeof STATIC_SCHEMAS;
+
         const schema = STATIC_SCHEMAS[c] as PrudenceSchema;
 
         logger.info(`=== Validating Collection ${c}... ===`);
@@ -126,11 +130,67 @@ async function ValidateScores(): Promise<void> {
 }
 
 async function ValidateCharts(): Promise<void> {
+    let globalStart = process.hrtime.bigint();
+    let globalTotal = 0;
+    let globalSuccess = 0;
+    let globalFail = 0;
     for (const game of supportedGames) {
-        let col = db.charts[game];
-        let schema = STATIC_SCHEMAS.charts[game];
+        let schema = PRUDENCE_CHART_SCHEMAS[game];
+
+        let successCount = 0;
+        let total = 0;
+        let fails: { err: PrudenceError; doc: unknown }[] = [];
+
+        logger.info(`=== Validating Collection charts (${game}) ... ===`);
+        let start = process.hrtime.bigint();
+
+        // eslint-disable-next-line no-await-in-loop
+        await db.charts[game]
+            .find({}, { projection: { _id: 0 } })
+            // @ts-expect-error shut UP
+            .each((c: unknown) => {
+                total++;
+                let res = Prudence(c, schema);
+
+                if (res === null) {
+                    successCount++;
+                } else {
+                    logger.error(`[${game}] [${res.keychain}] ${res.message}: ${res.userVal}`);
+                    fails.push({ err: res, doc: c });
+                }
+            });
+
+        let end = process.hrtime.bigint();
+        logger.info(`Validated ${total} objects. Took ${Number(end - start) / 1e9} seconds.`);
+        logger.info(`Success: ${successCount} (${((successCount * 100) / total).toFixed(2)}%)`);
+        logger.info(`Fail: ${fails.length} (${((fails.length * 100) / total).toFixed(2)}%)`);
+
+        if (fails.length !== 0) {
+            logger.severe(`Invalid documents found! Please resolve them.`);
+            fs.writeFileSync(path.join(BASE_DIR, `charts-${game}.json`), JSON.stringify(fails));
+            fs.writeFileSync(
+                path.join(BASE_DIR, `charts-${game}.log`),
+                `Validated ${total} objects. Took ${
+                    Number(end - start) / 1e9
+                } seconds.\nSuccess: ${successCount} (${((successCount * 100) / total).toFixed(
+                    2
+                )}%)\nFail: ${fails.length} (${((fails.length * 100) / total).toFixed(2)}%)`
+            );
+        }
+
+        globalTotal += total;
+        globalFail += fails.length;
+        globalSuccess += successCount;
     }
+
+    let globalEnd = process.hrtime.bigint();
+    logger.info(
+        `Validated ${globalTotal} objects. Took ${Number(globalEnd - globalStart) / 1e9} seconds.`
+    );
+    logger.info(`Success: ${globalSuccess} (${((globalSuccess * 100) / globalTotal).toFixed(2)}%)`);
+    logger.info(`Fail: ${globalFail} (${((globalFail * 100) / globalTotal).toFixed(2)}%)`);
 }
 
 // ValidateStaticSchemas();
-ValidateScores();
+// ValidateScores();
+ValidateCharts();