From the Developers Corner on the Official boards:

- A new implementation of the 85/15 rule will be introduced into Planes of Power zones including the Plane of Time. This should resolve the outstanding problems that occur from time to time with the current 85/15 implementation.

- The new 85/15 will also be introduced for the locked zones in Gates of Discord.

- An alternate means of flagging guild mates for locked content in Planes of Power and Gates of Discord will be implemented that will allow you to flag raid members for the zone you are in by completing raid content within that zone.

Read more here: http://thedruidsgrove.org/forums/showthread.php?p=149938#post149938