okay

code/game/objects/effects/decals/cleanable/humans.dm

@@ -71,7 +71,7 @@
 /obj/effect/decal/cleanable/blood/tracks/PersistenceLoad(list/data)
 	. = ..()
 	if(data["dir"])
-		setDir(data["dir"])
+		setDir(text2num(data["dir"]))
 
 /obj/effect/decal/cleanable/trail_holder //not a child of blood on purpose
 	name = "blood"
@@ -92,7 +92,7 @@
 /obj/effect/decal/cleanable/trail_holder/PersistenceLoad(list/data)
 	. = ..()
 	if(data["dir"])
-		setDir(data["dir"])
+		setDir(text2num(data["dir"]))
 	if(data["color"])
 		fixed_color = TRUE
 		add_atom_colour(data["color"], FIXED_COLOUR_PRIORITY)
@@ -138,7 +138,7 @@
 /obj/effect/decal/cleanable/blood/footprints/PersistenceLoad(list/data)
 	. = ..()
 	if(data["dir"])
-		setDir(data["dir"])
+		setDir(text2num(data["dir"]))
 
 /obj/effect/decal/cleanable/blood/footprints/Crossed(atom/movable/O)
 	if(ishuman(O))

code/game/objects/effects/decals/cleanable/misc.dm

@@ -83,7 +83,7 @@
 /obj/effect/decal/cleanable/dirt/PersistenceLoad(list/data)
 	. = ..()
 	if(data["alpha"])
-		alpha = data["alpha"]
+		alpha = text2num(data["alpha"])
 
 /obj/effect/decal/cleanable/dirt/Initialize()
 	. = ..()

code/game/objects/effects/decals/crayon.dm

@@ -48,7 +48,7 @@
 		name = data["name"]
 	if(do_icon_rotate && data["rotation"])
 		var/matrix/M = matrix()
-		M.Turn(data["rotation"])
+		M.Turn(text2num(data["rotation"]))
 		transform = M
 	if(data["paint_color"])
 		paint_colour = data["paint_color"]

code/game/objects/effects/decals/remains.dm

@@ -2,6 +2,7 @@
 	name = "remains"
 	gender = PLURAL
 	icon = 'icons/effects/blood.dmi'
+	persistent = TRUE
 
 /obj/effect/decal/remains/acid_act()
 	visible_message("<span class='warning'>[src] dissolve[gender==PLURAL?"":"s"] into a puddle of sizzling goop!</span>")