Timestamps only get set on inserting, not on updating

Server/Logs/BankAccountTransactionHistory.cs

@@ -30,7 +30,7 @@ namespace reallife_gamemode.Server.Logs
         public int Fee { get; set; }
         [StringLength(32)]
         public string Origin { get; set; }
-        [DatabaseGenerated(DatabaseGeneratedOption.Computed)]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public DateTime Timestamp { get; set; }
     }
 }