Gatherer&GathererDB Does Not Show High Level Nodes On World Map

[zerocoder]

Recently start playing wow and to make gold chossed to start with gathering professions then discovered gatherer plugin and gathererDB project it was working perfectly well until my mining becomes 450 even if it shows almost all possible nodes in low level areas in World Map does not show high level area nodes in world map but it is not related to database i think because in high level areas still showing nodes when I flying over them in small map.

So wonder why it is not showing high level mining nodes on world map? is there any way to make it show them as it show low level nodes.
Sorry for my pidgeon english and thanks a lot for all answers in advance.