Indeed, the Lebanon Daily Start in March 2014 reported that ISIS openly withdrew its forces from Latakia and Idlib provinces in western Syria, and redeployed them in Syria's east - along the Syrian-Iraqi border.
The article titled, "Al-Qaeda splinter group in Syria leaves two provinces: activists," stated explicitly that: On Friday, ISIS – which alienated many rebels by seizing territory and killing rival commanders – finished withdrawing from the Idlib and Latakia provinces and moved its forces toward the eastern Raqqa province and the eastern outskirts of the northern city of Aleppo, activists said.
The question remains, if a Lebanese newspaper knew ISIS was on the move eastward, why didn't the CIA? The obvious answer is the CIA did know, and is simply feigning ignorance at the expense of their reputation to bait its enemies into suspecting the agency of incompetency rather than complicity in the horrific terroristic swath ISIS is now carving through northern Iraq.
Despite drone flights collecting intelligence, and a 3-year ongoing CIA program (here, here, and here) all along the Turkish-Syrian border to "monitor" and "arm" "moderate" militants fighting the Syrian government, the US claims it was caught "by surprise." If drones and CIA operatives operating in ISIS territory weren't enough to detect the impending invasion, perhaps the CIA should have just picked up a newspaper