[REQ]: Any luck getting this working for CS2?

[kus]

I had a muck around manually updating gamemodes_server.txt with the following:

"GameModes_Server.txt"
{
	"gameTypes"
	{
		...
	}
	"mapgroups"
	{
		"mg_test"
		{
			"name"			"mg_test"
			"maps"
			{
				"de_anubis"			""
				"de_dust2"			""
				"workshop/3085490518/gd_rialto"		""
				"workshop/3070550406/de_safehouse"		""
				"workshop/3070552133/ar_shoots"		""
			}
		}
	}
	"maps"
	{
		"workshop/3085490518/gd_rialto"
		{
			"nameID"				"#SFUI_Map_gd_rialto"
			"name"					"gd_rialto"
			"imagename"				"map-gd_rialto-overall"
		}
		"workshop/3070550406/de_safehouse"
		{
			"nameID"				"#SFUI_Map_de_safehouse"
			"name"					"de_safehouse"
			"imagename"				"map-de_safehouse-overall"
		}
		"workshop/3070552133/ar_shoots"
		{
			"nameID"				"#SFUI_Map_ar_shoots"
			"name"					"ar_shoots"
			"imagename"				"map-ar_shoots-overall"
		}
	}

And putting these images in these directories (the .vtex_c were copies of other maps I renamed):

game/csgo/panorama/images/map_icons/screenshots/360p/ar_shoots.png
game/csgo/panorama/images/map_icons/screenshots/360p/de_safehouse_png.vtex_c
game/csgo/panorama/images/map_icons/screenshots/360p/gd_rialto_png.vtex_c
game/csgo/panorama/images/map_icons/screenshots/360p/workshop/3070550406/de_safehouse_png.vtex_c
game/csgo/panorama/images/map_icons/screenshots/360p/workshop/3070552133/ar_shoots.png
game/csgo/panorama/images/map_icons/screenshots/360p/workshop/3085490518/gd_rialto_png.vtex_c

But no images showed up.

I verified game/csgo/panorama/images/map_icons/screenshots/360p/ is the correct path from opening the .vpk files in CS2.