When adding a workshop map to maplist.txt map rotation stops working

[LukaLiuzzi]

Add train (from the workshop) to the maplist and now the same 6 maps always appear in the vote no matter how recently they have been played, when MapsInCoolDown is set to 3

This is my maplist.txt

//Put your map list here
//Cache:3070596702
//Cobblestone:205239595
de_vertigo
de_inferno
de_mirage
de_ancient
de_nuke
de_anubis
de_overpass
de_dust2
train:3070284539

[ThomasAdnum]

Try changing it to 'de_train:3070284539'

I've got de_ before all my workshop maps and they appear fine 👍

[LukaLiuzzi]

I try putting it like this and when that map comes out it takes the players off the server with the message "The required map is missing from your client"