Timeline Error

[Bingles]

On the Offical Timeline page on the Wiki, here on Year 20 (9 Years Ago) says the trolls were freed from the murloc siege.

20 (9 years ago) - Reign of Chaos. Third war begins.////// Thrall and his Orc brethren travel across the sea to Kalimdor. Along the way, they encounter the Darkspear Trolls, rescuing them from both the Kul Tiras navy as well as the combined forces of the Murlocs and Naga. Upon landing in Kalimdor, the Trolls settle in the Echo Isles, and the Warsong Clan begin their lumber work in the Northern Barrens/Southern Ashenvale. Thrall would seek out and help rescue the Tauren from the wrath of the Centaur. The Orcs, Trolls, and Tauren for the foundation of the New Horde.//
Plague hits Stratholme. Arthas purges almost all of its inhabitants. The Scourge eventually take control of the city. Andorhal also falls during this time.
Dalaran is destroyed by Archimonde. In the aftermath of the war, the city starts to be rebuilt, and eventually moved to its current position above Crystalsong Forest in Northrend.
Stromgarde is invaded by the Syndicate, Boulderfist Ogres, and Witherbark Trolls.
Gnomeregan is invaded by Troggs, which combined with the ill-advised venting of radioactive waste tanks wipes out eighty percent of the Gnomish population and keeps the Gnomes significantly absent from the Third War. The survivors resettle at Ironforge in Tinkertown.
Tranquillien, Silvermoon City, and all of Quel'Thalas along what is now the Dead Scar fall as the Sunwell is corrupted and destroyed by Arthas, slaughtering ninety percent of the high elf population. Kael'thas returns.
The Druids are reawakened by Malfurion Stormrage. At the Battle of Mount Hyjal, Archimonde is defeated and the World Tree is destroyed.
The Night Elves maintain their relationship with the Alliance after the end of the war.

But here on the troll timeline, on the wiki it says this.

7 years ago

Escape to Kalimdor - The Orcs find the Darkspear Trolls on the Darkspear Isles, being raided by Murlocs. With the help of the orcs, they fight back the Sea Witch which was trying to get rid of them. The isles then begin to sink into the ocean and the Trolls escape with the Orcs and make their way to Kalimdor.
7 years ago

Third War - The Burning Legion enter the world, led by Archimonde, and assault the World Tree, Nordrassil. The Horde, led by Thrall, do their best to help keep the Legion away from the Tree and successfully assist the Alliance into holding off the Legion for long enough.

Note: If you are a Troll from one of the Strangethorn Vale tribes, these do not apply.

Which says the trolls are freed 7 years ago. Which should I go by?

[Rowgen]

Keep in mind that some portions of the Wiki are unfortunately outdated, especially in regards of the timelines.

[Reigen]

Please pay attention to what the wiki says. I put, clearly, under the racial timeline header:

[Under construction to work with the new timeline. Do not use the below timelines.]

Do not use the race by race timelines. Use the official Timeline.

Edit: I made the section saying what not to use bigger.

[Bingles]

Whoops, didn't see that. Thanks!