An explanation for this hiccup in the career of Morgan comes courtesy today's New York Times:—
In other words, Eastwood shot the first draft.
A couple of months later [Morgan] was further bewildered when he learned that Mr. Eastwood, who had purchased the rights to “Hereafter,” was already filming off the original script. Though known for writing on spec and resisting the traditional development process, Mr. Morgan had been looking forward to working with Mr. Eastwood. “I imagined we’d have all sorts of conversations about the characters, about the plot,” he said. “But we never did. What you see on the screen is this thing I wrote very sketchily in the mountains of Austria." Mr. Eastwood said he typically works this way. “I believe very strongly in first impressions,” he explained. “When something hits you and excites your interest, there’s really no reason to kill it with improvements.”