diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 458caafe..a5b905df 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -535,6 +535,7 @@ class Mlogbw(BaseModel):
             defect_ids = defect_ids.union(tqs_has_a.values_list("defect", flat=True))
             defects = {defect.id: defect for defect in Defect.objects.filter(id__in=defect_ids)}
             md_ids = []
+            MlogbDefect.objects.filter(mlogb=mlogb).delete()
             for t in tqs_a:
                 md, _ = MlogbDefect.objects.get_or_create(mlogb=mlogb, defect=defects[t["ftest__defect_main"]])
                 md.count = t["xcount"]
@@ -550,7 +551,6 @@ class Mlogbw(BaseModel):
                 md.save()
                 md_ids.append(md.id)
 
-            MlogbDefect.objects.filter(mlogb=mlogb).exclude(id__in=md_ids).delete()
             mlogb.count_notok = count_notok
             mlogb.count_ok = count - mlogb.count_notok
             mlogb.count_ok_full = count - count_notok_full