New source found from dndbeyond.com

ddb_main/tools/js/Shared/components/ItemDetail/ItemDetail.tsx

@@ -383,18 +383,38 @@ export class ItemDetail extends React.PureComponent<Props> {
             />
           </div>
         )}
-        {replacementWeaponStats.map((statId) => (
-          <div className="ct-item-detail__class-customize-item" key={statId}>
+        {replacementWeaponStats.map((replacementInfo) => (
+          <div
+            className="ct-item-detail__class-customize-item"
+            key={`${replacementInfo.statId}-${replacementInfo.dataOrigin.primary.definition.id}`}
+          >
             <Checkbox
-              enabled={appliedWeaponReplacementStats.includes(statId)}
+              enabled={appliedWeaponReplacementStats.includes(
+                replacementInfo.statId
+              )}
               onChange={(enabled) =>
-                this.handleReplaceAbilityStatChange(enabled, statId)
+                this.handleReplaceAbilityStatChange(
+                  enabled,
+                  replacementInfo.statId
+                )
+              }
+              label={
+                <>
+                  Use{" "}
+                  {RuleDataUtils.getStatNameById(
+                    replacementInfo.statId,
+                    ruleData,
+                    true
+                  )}{" "}
+                  <span className={styles.origin}>
+                    (<span className={styles.originLabel}>From</span>
+                    <span className={styles.originName}>
+                      {replacementInfo.dataOrigin.primary.definition.name}
+                    </span>
+                    )
+                  </span>
+                </>
               }
-              label={`Use ${RuleDataUtils.getStatNameById(
-                statId,
-                ruleData,
-                true
-              )}`}
             />
           </div>
         ))}