Any data entered into an objective if it is the same values as in the earlier entry it is not saved to the database.

e.g.
cmi.objectives.0.id = 'one'
cmi.objectives.0.score.max = '100'
cmi.objectives.0.score.raw = '0'

cmi.objectives.1.id = 'two'
cmi.objectives.1.score.max = '100'
cmi.objectives.1.score.raw = '0'

cmi.objectives.1.id = 'three'
cmi.objectives.1.score.max = '100'
cmi.objectives.1.score.raw = '0'

This could easily be an initiation of the objectives, but the data that is stored is:

cmi.objectives.0.id = 'one'
cmi.objectives.0.score.max = '100'
cmi.objectives.0.score.raw = '0'
cmi.objectives.1.id = 'two'
cmi.objectives.1.id = 'three'

Only the unique values are saved, any same values in consecutive objectives are omitted.