hasMany Through question

I have a hasMany through with the joined models having the $hasMany key set to the join, and the join model $belongsTo each of the others.

StudentLearningOutcome hasMany LuStudentConcentrationsStudentLearningOutcome

LuStudentConcentration hasMany LuStudentConcentrationsStudentLearningOutcome

LuStudentConcentrationsStudentLearningOutcomes belongsTo StudentLearningOutcome

LuStudentConcentrationsStudentLearningOutcomes belongsTo LuStudentConcentration

I'm trying to get the LuStudentConcentrations (name field) to show up on the add/edit for a StudentLearningOutcome. However, it's not working.  I'm either getting no options pre-select on the edit, or the wrong options selected.

Is there no cake-magic way to do this?  I've seen articles about writing custom saves that will move data around, but that seems hacky to me.

Thanks!

John

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