diff --git a/module/config/server.py b/module/config/server.py
index 94e6192..a76bc5a 100644
--- a/module/config/server.py
+++ b/module/config/server.py
@@ -37,15 +37,18 @@ def set_lang(lang_: str):
     release_resources()
 
 
-def to_server(package_or_server: str) -> str:
+def to_server(package_or_server: str, before: str = '') -> str:
     """
     Convert package/server to server.
     To unknown packages, consider they are a CN channel servers.
     """
-    # Can't distinguish different regions of oversea servers,
-    # assume it's 'OVERSEA-Asia'
-    # if package_or_server == 'com.HoYoverse.hkrpgoversea':
-    #     return 'OVERSEA-Asia'
+    if package_or_server == 'com.nexon.bluearchive':
+        # Can't distinguish different regions of oversea servers, but we try to reuse old value
+        if before in ['OVERSEA-Asia', 'OVERSEA-America', 'OVERSEA-Korea', 'OVERSEA-TWHKMO', 'OVERSEA-Global']:
+            return before
+        else:
+            # otherwise assume it's 'OVERSEA-Asia'
+            return 'OVERSEA-Asia'
 
     for key, value in VALID_SERVER.items():
         if value == package_or_server:
diff --git a/module/device/connection.py b/module/device/connection.py
index 896aa34..a9ef2f3 100644
--- a/module/device/connection.py
+++ b/module/device/connection.py
@@ -1246,7 +1246,8 @@ class Connection(ConnectionAttr):
             self.package = packages[0]
             # Set config
             if set_config:
-                self.config.Emulator_PackageName = server_.to_server(self.package)
+                self.config.Emulator_PackageName = server_.to_server(
+                    self.package, before=self.config.Emulator_PackageName)
             # Set server
             # logger.info('Server changed, release resources')
             # set_server(self.package)