Differences between internal and external tilesets

INTERNAL WITH LUA EXPORT:
	tiles = table: 0x105b22da0
	tileheight = 120
	firstgid = 1
	properties = table: 0x105b22820
	image = ../tilesets/01.png
	name = 01
	spacing = 8
	imageheight = 1024
	imagewidth = 1024
	margin = 4
	tilewidth = 120

EXTERNAL WITH LUA EXPORT:
	firstgid = 1
	tiles = table: 0x10b0a4e90
	name = 01
	filename = ../tilesets/01.tsx