diff --git a/par-core/src/main/java/com/par/core/service/impl/ConfigServiceImpl.java b/par-core/src/main/java/com/par/core/service/impl/ConfigServiceImpl.java
index e2067ff..2cbba96 100644
--- a/par-core/src/main/java/com/par/core/service/impl/ConfigServiceImpl.java
+++ b/par-core/src/main/java/com/par/core/service/impl/ConfigServiceImpl.java
@@ -70,7 +70,7 @@ public class ConfigServiceImpl implements ConfigService {
             return sameHash;
         }
 
-        // 写入存储
+        // 存储到抽象存储层
         try {
             storageService.store(storagePath, configJson);
         } catch (Exception e) {
@@ -78,34 +78,12 @@ public class ConfigServiceImpl implements ConfigService {
             throw new RuntimeException("存储配置文件失败: " + e.getMessage(), e);
         }
 
-        long fileSize = configJson.getBytes(StandardCharsets.UTF_8).length;
-
-        // 同一 (site_id, version) 已有 PENDING 记录 → 更新而非新增（避免唯一约束冲突）
-        SiteConfig existingPending = siteConfigMapper.selectOne(
-                new com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper<SiteConfig>()
-                        .eq(SiteConfig::getSiteId, siteId)
-                        .eq(SiteConfig::getVersion, version)
-                        .eq(SiteConfig::getStatus, ConfigStatus.PENDING)
-                        .eq(SiteConfig::getDeleted, 0));
-        if (existingPending != null) {
-            // 删除旧存储文件
-            storageService.delete(existingPending.getStoragePath());
-            existingPending.setConfigHash(configHash);
-            existingPending.setStoragePath(storagePath);
-            existingPending.setFileSize(fileSize);
-            existingPending.setSchemaVersion(schemaVersion != null ? schemaVersion : existingPending.getSchemaVersion());
-            existingPending.setSubmitterId(submitterId);
-            siteConfigMapper.updateById(existingPending);
-            log.info("Config updated: siteId={}, version={}, id={}, hash={}", siteId, version, existingPending.getId(), configHash);
-            return existingPending;
-        }
-
         SiteConfig config = new SiteConfig();
         config.setSiteId(siteId);
-        config.setVersion(version);
+        config.setVersion(version);  // 客户端传入的版本，仅供参考；批准时会被自动分配的新版本号覆盖
         config.setConfigHash(configHash);
         config.setStoragePath(storagePath);
-        config.setFileSize(fileSize);
+        config.setFileSize((long) configJson.getBytes(StandardCharsets.UTF_8).length);
         config.setSchemaVersion(schemaVersion != null ? schemaVersion : "1.0.0");
         config.setStatus(ConfigStatus.PENDING);
         config.setSubmitterId(submitterId);
diff --git a/par-core/src/main/resources/db/migration/V11__drop_site_config_version_unique.sql b/par-core/src/main/resources/db/migration/V11__drop_site_config_version_unique.sql
new file mode 100644
index 0000000..c54e185
--- /dev/null
+++ b/par-core/src/main/resources/db/migration/V11__drop_site_config_version_unique.sql
@@ -0,0 +1,3 @@
+-- PAR Flyway V11: 移除 site_configs 的 (site_id, version) 唯一约束
+-- 版本号在审批通过时才由服务端自动分配，提交时客户端传入的版本仅供参考，不应限制唯一
+ALTER TABLE site_configs DROP INDEX uk_site_version;