diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index d201f41a6..2bbb796d8 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -1736,6 +1736,8 @@ enum SIX_Flags
 	SIXF_CLEARCALLERTID			= 1 << 12,
 	SIXF_MULTIPLYSPEED			= 1 << 13,
 	SIXF_TRANSFERSCALE			= 1 << 14,
+	SIXF_TRANSFERSPECIAL		= 1 << 15,
+	SIXF_CLEARCALLERSPECIAL		= 1 << 16,
 };
 
 static bool InitSpawnedItem(AActor *self, AActor *mo, int flags)
@@ -1838,6 +1840,16 @@ static bool InitSpawnedItem(AActor *self, AActor *mo, int flags)
 		self->RemoveFromHash();
 		self->tid = 0;
 	}
+	if (flags & SIXF_TRANSFERSPECIAL)
+	{
+		mo->special = self->special;
+		memcpy(mo->args, self->args, sizeof(self->args));
+	}
+	if (flags & SIXF_CLEARCALLERSPECIAL)
+	{
+		self->special = 0;
+		memset(self->args, 0, sizeof(self->args));
+	}
 
 	return true;
 }
diff --git a/wadsrc/static/actors/constants.txt b/wadsrc/static/actors/constants.txt
index db4e9abbe..b26fae9c7 100644
--- a/wadsrc/static/actors/constants.txt
+++ b/wadsrc/static/actors/constants.txt
@@ -57,6 +57,8 @@ const int SXF_USEBLOODCOLOR = 2048;
 const int SXF_CLEARCALLERTID = 4096;
 const int SXF_MULTIPLYSPEED = 8192;
 const int SXF_TRANSFERSCALE = 16384;
+const int SXF_TRANSFERSPECIAL = 32768;
+const int SXF_CLEARCALLERSPECIAL = 65536;
 
 // Flags for A_Chase
 const int CHF_FASTCHASE = 1;