diff --git a/PKHeX.Core/MysteryGifts/WB7.cs b/PKHeX.Core/MysteryGifts/WB7.cs
index 8f118489c..0b077f2ed 100644
--- a/PKHeX.Core/MysteryGifts/WB7.cs
+++ b/PKHeX.Core/MysteryGifts/WB7.cs
@@ -69,7 +69,7 @@ private uint Day
             set => RawDate = SetDate(Year, Month, value);
         }
 
-        private static uint SetDate(uint year, uint month, uint day) => ((year - 2000) * 10000) + (month * 100) + day;
+        private static uint SetDate(uint year, uint month, uint day) => Math.Max(0, year - 2000) * 10000 + (month * 100) + day;
 
         /// <summary>
         /// Gets or sets the date of the card.
diff --git a/PKHeX.Core/MysteryGifts/WC6.cs b/PKHeX.Core/MysteryGifts/WC6.cs
index 0d2c71149..1b3fdfa0f 100644
--- a/PKHeX.Core/MysteryGifts/WC6.cs
+++ b/PKHeX.Core/MysteryGifts/WC6.cs
@@ -18,21 +18,21 @@ public sealed class WC6 : MysteryGift, IRibbonSetEvent3, IRibbonSetEvent4, ILang
 
         public WC6(byte[] data)
         {
-            Data = data;
-            if (Data.Length != SizeFull)
-                return;
+            Data = data; if (Data.Length == SizeFull)
+            {
+                // Load Restrictions
+                RestrictVersion = Data[0x000];
+                RestrictLanguage = Data[0x1FF];
+                byte[] wc6 = new byte[Size];
+                if (Data[0x205] != 0) // Valid data
+                    Array.Copy(Data, SizeFull - Size, wc6, 0, wc6.Length);
+                Data = wc6;
 
-            // Load Restrictions
-            RestrictVersion = Data[0x000];
-            RestrictLanguage = Data[0x1FF];
-
-            byte[] wc6 = new byte[Size];
-            if (Data[0x205] != 0) // Valid data
-                Array.Copy(Data, SizeFull - Size, wc6, 0, wc6.Length);
-            Data = wc6;
-
-            DateTime now = DateTime.Now;
-            RawDate = SetDate((uint) now.Year, (uint) now.Month, (uint) now.Day);
+                DateTime now = DateTime.Now;
+                SetDate((uint) now.Year, (uint) now.Month, (uint) now.Day);
+            }
+            if (Year < 2000)
+                Data = new byte[Data.Length]; // Invalidate
         }
 
         public int RestrictLanguage { get; set; } = 0; // None
diff --git a/PKHeX.Core/MysteryGifts/WC7.cs b/PKHeX.Core/MysteryGifts/WC7.cs
index 258318c42..df677efcb 100644
--- a/PKHeX.Core/MysteryGifts/WC7.cs
+++ b/PKHeX.Core/MysteryGifts/WC7.cs
@@ -85,7 +85,7 @@ private uint Day
             set => RawDate = SetDate(Year, Month, value);
         }
 
-        private static uint SetDate(uint year, uint month, uint day) => ((year - 2000) * 10000) + (month * 100) + day;
+        private static uint SetDate(uint year, uint month, uint day) => Math.Max(0, year - 2000) * 10000 + (month * 100) + day;
 
         /// <summary>
         /// Gets or sets the date of the card.