How to delete xmas trees and flags ?

I need the original jangan town maps. I found some jangan maps but it did not work.
I deleted the xmas trees in donw-hang,hotan,samarkand and constantilople. But the trees just stayed in Jangan. Can anyone help me about this ?
How can i delete the trees and flags in jangan town ?

extract from the clean client

Use another map.pk2