Resolves #138

server/src/lib/score-import/import-types/ir/beatoraja/converter.ts

@@ -104,6 +104,12 @@ export const ConverterIRBeatoraja: ConverterFunction<BeatorajaScore, BeatorajaCo
         };
     }
 
+    let random = null;
+
+    if (chart.playtype === "7K") {
+        random = RANDOM_LOOKUP[data.option];
+    }
+
     const lamp = LAMP_LOOKUP[data.clear];
 
     const dryScore: DryScore<"bms:7K" | "bms:14K"> = {
@@ -121,7 +127,7 @@ export const ConverterIRBeatoraja: ConverterFunction<BeatorajaScore, BeatorajaCo
         scoreMeta: {
             client: context.client,
             inputDevice: data.deviceType,
-            random: RANDOM_LOOKUP[data.option] ?? null,
+            random,
         },
         timeAchieved: Date.now(),
         service: "Beatoraja IR",

server/src/server/router/ir/beatoraja/charts/convert-scores.ts

@@ -102,7 +102,8 @@ function TachiScoreDataToBeatorajaFormat(
 
     let rajaRandom = 0 as const;
 
-    // @todo #138 Investigate how beatoraja handles DP randoms - for now, we just skip them.
+    // Beatoraja does not support DP randoms - it only stores them in replay files,
+    // and only sends the left hand random here.
     if (pbScore.playtype === "7K") {
         if (random) {
             // @ts-expect-error Invalid indexing because playtype removes the random tuple.