Just remove on_loc_moved entirely

code/modules/integrated_electronics/core/assemblies.dm

@@ -349,14 +349,6 @@
 		return TRUE
 	return FALSE
 
-/obj/item/device/electronic_assembly/on_loc_moved(oldloc)
-	for(var/obj/O in contents)
-		O.on_loc_moved(oldloc)
-
-/obj/item/device/electronic_assembly/Moved(var/oldloc)
-	for(var/obj/O in contents)
-		O.on_loc_moved(oldloc)
-
 /obj/item/device/electronic_assembly/proc/on_anchored()
 	for(var/obj/item/integrated_circuit/IC in contents)
 		IC.on_anchored()

code/modules/integrated_electronics/core/assemblies/clothing.dm

@@ -67,18 +67,6 @@
 	else
 		..()
 
-/obj/item/clothing/Moved(oldloc)
-	if(IC)
-		IC.on_loc_moved(oldloc)
-	else
-		..()
-
-/obj/item/clothing/on_loc_moved(oldloc)
-	if(IC)
-		IC.on_loc_moved(oldloc)
-	else
-		..()
-
 // Does most of the repeatative setup.
 /obj/item/clothing/proc/setup_integrated_circuit(new_type)
 	// Set up the internal circuit holder.

code/modules/integrated_electronics/subtypes/output.dm

@@ -414,8 +414,13 @@
 //	var/datum/beam/holo_beam = null // A visual effect, to make it easy to know where a hologram is coming from.
 	// It is commented out due to picking up the assembly killing the beam.
 
+/obj/item/integrated_circuit/output/holographic_projector/Initialize()
+	. = ..()
+	GLOB.moved_event.register(src, src, .proc/on_moved)
+
 /obj/item/integrated_circuit/output/holographic_projector/Destroy()
 	destroy_hologram()
+	GLOB.moved_event.unregister(src, src, .proc/on_moved)
 	return ..()
 
 /obj/item/integrated_circuit/output/holographic_projector/do_work()
@@ -506,7 +511,7 @@
 	if(hologram)
 		update_hologram()
 
-/obj/item/integrated_circuit/output/holographic_projector/on_loc_moved(atom/oldloc)
+/obj/item/integrated_circuit/output/holographic_projector/proc/on_moved()
 	if(hologram)
 		update_hologram_position()
 

code/modules/mob/mob_movement.dm

@@ -457,21 +457,6 @@
 /mob/proc/update_gravity()
 	return
 
-// Called when a mob successfully moves.
-// Would've been an /atom/movable proc but it caused issues.
-/mob/Moved(atom/oldloc)
-	. = ..()
-	for(var/obj/O in contents)
-		O.on_loc_moved(oldloc)
-
-// Received from Moved(), useful for items that need to know that their loc just moved.
-/obj/proc/on_loc_moved(atom/oldloc)
-	return
-
-/obj/item/weapon/storage/on_loc_moved(atom/oldloc)
-	for(var/obj/O in contents)
-		O.on_loc_moved(oldloc)
-
 /client/verb/moveup()
 	set name = ".moveup"
 	set instant = 1

code/modules/shieldgen/directional_shield.dm

@@ -97,17 +97,22 @@
 	var/high_color = "#0099FF"			// Color the shield will be when at max health.  A light blue.
 	var/low_color = "#FF0000"			// Color the shield will drift towards as health is lowered.  Deep red.
 
-/obj/item/shield_projector/New()
+/obj/item/shield_projector/Initialize()
 	START_PROCESSING(SSobj, src)
 	if(always_on)
 		create_shields()
+	GLOB.moved_event.register(src, src, .proc/moved_event)
 	..()
 
 /obj/item/shield_projector/Destroy()
 	destroy_shields()
 	STOP_PROCESSING(SSobj, src)
+	GLOB.moved_event.unregister(src, src, .proc/moved_event)
 	return ..()
 
+/obj/item/shield_projector/proc/moved_event()
+	update_shield_positions()
+
 /obj/item/shield_projector/proc/create_shield(var/newloc, var/new_dir)
 	var/obj/effect/directional_shield/S = new(newloc, src)
 	S.dir = new_dir
@@ -210,14 +215,6 @@
 /obj/item/shield_projector/emp_act(var/severity)
 	adjust_health(-max_shield_health / severity) // A strong EMP will kill the shield instantly, but weaker ones won't on the first hit.
 
-/obj/item/shield_projector/Move(var/newloc, var/direct)
-	..(newloc, direct)
-	update_shield_positions()
-
-/obj/item/shield_projector/on_loc_moved(atom/oldloc)
-	update_shield_positions()
-
-
 // Subtypes
 
 /obj/item/shield_projector/rectangle