Cant pass the quest The Green Hiils in Stranglethorn

[Sartas 0]

I play in Anathema server on the horde side. I did the quest in Stranglethorn called The Green Hiils in Stranglethorn. I need to bring 4 chapters of story to Barnil Stonepot. 

So i brought him 3 chapters, but cant pass the Chapter 1. I have all pages for this chapter, but cant complete the quest. 

[Sartas 0]

Solve the problem by myself. 

I Just abandoned quests " The Green Hiils in Stranglethorn" and "Chapter 1", then take them again. After that I could pass quests. 

On official servers if you abandoned "The Green Hiils in Stranglethorn" the existing chapters removed from your inventory, but not on Anathema server.