diff --git a/src/DatabaseServices/Entity/Board.ts b/src/DatabaseServices/Entity/Board.ts
index b2e7ec51c..a0a72153d 100644
--- a/src/DatabaseServices/Entity/Board.ts
+++ b/src/DatabaseServices/Entity/Board.ts
@@ -754,7 +754,9 @@ export class Board extends ExtrudeSolid
                 br.ProcessingGroupList = [...this.ProcessingGroupList];
                 br._BoardProcessOption = { ...this._BoardProcessOption };
                 br._CustomNumber = this._CustomNumber;//因为CustomNumber不会刷新绘制,所以拷贝这个
-                br.BoardModeling = this.BoardModeling;//该板在另外一块挖穿造型位置grooves丢失
+
+                if (!br.grooves.length && this.grooves.length)
+                    br.grooves = this.grooves;//该板在另外一块挖穿造型位置grooves丢失
 
                 let new2old_edgeMap: number[];
                 //修正排钻边的数据