diff --git a/src/config.ts b/src/config.ts
index 93c6a43..7b15987 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -16,7 +16,7 @@ addDefaults(config, {
     privateDBSchema: "./databases/_private.db.sql",
     readOnly: false,
     webhooks: [],
-    categoryList: ["sponsor", "intro", "outro", "interaction", "selfpromo", "music_offtopic"],
+    categoryList: ["sponsor", "selfpromo", "interaction",  "intro", "outro", "preview", "music_offtopic"],
     maxNumberOfActiveWarnings: 3,
     hoursAfterWarningExpires: 24,
     adminUserID: "",
diff --git a/src/databases/Postgres.ts b/src/databases/Postgres.ts
index e7e16f4..779ebf2 100644
--- a/src/databases/Postgres.ts
+++ b/src/databases/Postgres.ts
@@ -136,7 +136,7 @@ export class Postgres implements IDatabase {
 
     private processUpgradeQuery(query: string): string {
         let result = query;
-        result = result.replace(/sha256\((.*?)\)/gm, "digest($1, 'sha256')");
+        result = result.replace(/sha256\((.*?)\)/gm, "encode(digest($1, 'sha256'), 'hex')");
         result = result.replace(/integer/gmi, "NUMERIC");
 
         return result;
diff --git a/src/routes/postSkipSegments.ts b/src/routes/postSkipSegments.ts
index 37c4985..1f380da 100644
--- a/src/routes/postSkipSegments.ts
+++ b/src/routes/postSkipSegments.ts
@@ -377,7 +377,8 @@ export async function postSkipSegments(req: Request, res: Response) {
         videoDuration = apiVideoDuration || 0 as VideoDuration;
     }
 
-    const previousSubmissions = await db.prepare('all', `SELECT "videoDuration", "UUID" FROM "sponsorTimes" WHERE "videoID" = ? AND "service" = ? AND "hidden" = 0 AND "shadowHidden" = 0 AND "votes" >= 0`, [videoID, service]) as 
+    const previousSubmissions = await db.prepare('all', `SELECT "videoDuration", "UUID" FROM "sponsorTimes" WHERE "videoID" = ? AND "service" = ? AND "hidden" = 0 
+                    AND "shadowHidden" = 0 AND "votes" >= 0 AND "videoDuration" != 0`, [videoID, service]) as 
                         {videoDuration: VideoDuration, UUID: SegmentUUID}[];
     // If the video's duration is changed, then the video should be unlocked and old submissions should be hidden
     const videoDurationChanged = previousSubmissions.length > 0 && !previousSubmissions.some((e) => Math.abs(videoDuration - e.videoDuration) < 2);
diff --git a/test.json b/test.json
index add6ebf..58eb72a 100644
--- a/test.json
+++ b/test.json
@@ -49,7 +49,7 @@
             ]
         }
     ],
-    "categoryList": ["sponsor", "intro", "outro", "interaction", "selfpromo", "music_offtopic"],
+    "categoryList": ["sponsor", "selfpromo", "interaction",  "intro", "outro", "preview", "music_offtopic"],
     "maxNumberOfActiveWarnings": 3,
     "hoursAfterWarningExpires": 24,
     "rateLimit": {