You're right!
You only get one crack at the CTC. If you fail, CASA will give you credits for the areas you passed then you have to sit the outstanding ones individually.
If you're ex-ADF or Overseas LAME you would be best to submit an LTA assessment as guys and girls from the defence forces are now getting credits for the CASA basics and some SOE reduction. About time I say... but alas too late for me, I had to do it the hard way!
Best of luck with it
