diff --git a/func/Module_approximately_align.py b/func/Module_approximately_align.py
index a63268c..d4b6589 100644
--- a/func/Module_approximately_align.py
+++ b/func/Module_approximately_align.py
@@ -1116,6 +1116,9 @@ class Data:
                                              int(Config["orgBcg_seconds"] * Config["ApplyFrequency"]))
             self.processed_Tho = resample(self.raw_Tho, int(Config["PSG_seconds"] * Config["ApplyFrequency"]))
             self.processed_Abd = resample(self.raw_Abd, int(Config["PSG_seconds"] * Config["ApplyFrequency"]))
+            self.processed_downsample_orgBcg = self.processed_orgBcg.copy()
+            self.processed_downsample_Tho = self.processed_Tho.copy()
+            self.processed_downsample_Abd = self.processed_Abd.copy()
         except Exception as e:
             return Result().failure(
                 info=Constants.APPROXIMATELY_ONLY_ALIGN_RESAMPLE_FAILURE + Constants.FAILURE_REASON[