diff --git a/api.lua b/api.lua
index 7fe69bb..a4f42e2 100644
--- a/api.lua
+++ b/api.lua
@@ -33,7 +33,7 @@ local use_mc2 = minetest.get_modpath("mcl_core")
 -- Global
 mobs = {
 	mod = "redo",
-	version = "20230927",
+	version = "20230930",
 	translate = S, intllib = S,
 	invis = minetest.global_exists("invisibility") and invisibility or {},
 	node_ice = "default:ice",
@@ -2000,8 +2000,7 @@ local function is_peaceful_player(player)
 		local player_name = player:get_player_name()
 
 		-- player priv enabled
-		if player_name
-		and minetest.check_player_privs(player_name, "peaceful_player") then
+		if player_name and minetest.check_player_privs(player_name, "peaceful_player") then
 			return true
 		end
 	end
@@ -3238,6 +3237,27 @@ function mob_class:mob_staticdata()
 		self.serialized_cmi_components = cmi.serialize_components(self._cmi_components)
 	end
 
+	-- move existing variables to new initial_properties table for future compatibility
+	if not self.initial_properties then
+
+		self.initial_properties = {
+			hp_max = self.hp_max,
+			physical = self.physical,
+			collisionbox = self.collisionbox,
+			selectionbox = self.selectionbox,
+			visual = self.visual,
+			visual_size = self.visual_size,
+			mesh = self.mesh,
+			textures = self.textures,
+			make_footstep_sound = self.make_footstep_sound,
+			stepheight = self.stepheight,
+			glow = self.glow,
+			nametag = self.nametag,
+			damage_texture_modifier = self.damage_texture_modifier,
+			infotext = self.infotext
+		}
+	end
+
 	return minetest.serialize(clean_staticdata(self))
 end