diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index 23844fca..d8ecb120 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "3.1.22",
+    "version": "3.1.23",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/hydrojudge/src/cases.ts b/packages/hydrojudge/src/cases.ts
index 33a87fba..58157518 100644
--- a/packages/hydrojudge/src/cases.ts
+++ b/packages/hydrojudge/src/cases.ts
@@ -42,7 +42,7 @@ interface Args {
     key: string;
     isSelfSubmission: boolean;
     lang: string;
-    langConfig: LangConfig;
+    langConfig?: LangConfig;
 }
 
 export default async function readCases(folder: string, cfg: ProblemConfigFile = {}, args: Args): Promise<ParsedConfig> {
@@ -68,8 +68,8 @@ export default async function readCases(folder: string, cfg: ProblemConfigFile =
     } catch (e) {
         throw changeErrorType(e, FormatError);
     }
-    const timeRate = +(config.time_limit_rate?.[args.lang] || args.langConfig.time_limit_rate) || 1;
-    const memoryRate = +(config.memory_limit_rate?.[args.lang] || args.langConfig.memory_limit_rate) || 1;
+    const timeRate = +(config.time_limit_rate?.[args.lang] || args.langConfig?.time_limit_rate || 1) || 1;
+    const memoryRate = +(config.memory_limit_rate?.[args.lang] || args.langConfig?.memory_limit_rate || 1) || 1;
     const checkFile = ensureFile(folder);
     const result = await readYamlCases(config, checkFile)
         .catch((e) => { throw changeErrorType(e, FormatError); });
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index dc74baf1..e23c264a 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "4.9.5",
+    "version": "4.9.6",
     "bin": "bin/hydrooj.js",
     "main": "src/plugin-api",
     "module": "src/plugin-api",
diff --git a/packages/hydrooj/src/model/record.ts b/packages/hydrooj/src/model/record.ts
index a552ed8a..30f906e4 100644
--- a/packages/hydrooj/src/model/record.ts
+++ b/packages/hydrooj/src/model/record.ts
@@ -70,6 +70,7 @@ export default class RecordModel {
         let data: FileInfo[] = [];
         let source = `${domainId}/${rdoc.pid}`;
         meta = { ...meta, problemOwner: 1 };
+        await task.deleteMany({ rid: { $in: rids } });
         if (rdoc.pid) {
             let pdoc = await problem.get(rdoc.domainId, rdoc.pid);
             if (!pdoc) throw new ProblemNotFoundError(rdoc.domainId, rdoc.pid);
@@ -81,8 +82,8 @@ export default class RecordModel {
             source = `${pdoc.domainId}/${pdoc.docId}`;
             data = pdoc.data;
             if (typeof pdoc.config === 'string') throw new Error(pdoc.config);
+            config.type = pdoc.config.type as any;
             if (pdoc.config.type === 'remote_judge' && rdoc.contest?.toHexString() !== '0'.repeat(24)) {
-                await task.deleteMany({ rid: { $in: rids } });
                 return await task.addMany(rids.map((rid) => ({
                     ...(pdoc.config as any),
                     priority,
@@ -94,7 +95,6 @@ export default class RecordModel {
                 } as any)));
             }
         }
-        await task.deleteMany({ rid: { $in: rids } });
         return await task.addMany(rids.map((rid) => ({
             priority,
             type: 'judge',