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Co-authored-by: Cursor <cursoragent@cursor.com>

extensions/level-map-editor/dist/prefab-sync.js

@@ -164,8 +164,10 @@ function parseTilesFromNodes(objs, projectPath) {
 function mergeMapSources(mapData, fromNodes) {
     const md = mapData || { ground: {}, border: {}, theme: null, levelID: 0 };
     const nodes = fromNodes || { ground: {}, border: {} };
-    const ground = Object.keys(nodes.ground).length ? nodes.ground : md.ground || {};
-    const border = Object.keys(nodes.border).length ? nodes.border : md.border || {};
+    // LevelMapData 是烘焙权威（含 JumpBlock / kuai11）。节点贴图 UUID 对不上时
+    // 会被收成 Baseblock / WallBlock，不能盖过 JSON。
+    const ground = Object.keys(md.ground || {}).length ? md.ground : (nodes.ground || {});
+    const border = Object.keys(md.border || {}).length ? md.border : (nodes.border || {});
     return {
         levelID: md.levelID || 0,
         ground,