I figured out the problem.
DefaultSolver.runSolverPhases() will go through each phase, and will revert
the changes if they're not better. Or, more exactly, here are lines 191-193:
if (it.hasNext()) {
// solverScope.setWorkingSolutionFromBestSolution();
}
Now, if this involved setting the planning variables for the first time,
those will be reverted.
There's a few ways of tackling this, some of which are on the user end, such
as a adding a hard constraint to penalize the solution if the planning
variable isn't set.
Jon
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