Thunderbird, I hope I have understood correctly but it seems that you have a First Series pass in your CPL!
You are allowed a second attempt at your first 'series' if you fail one section in your first attempt. If you only failed Section 4 and then had to do just that bit again and passed it then you have a first series pass. (If you had failed that retest then you would have to do the whole test again in your Second Series).
If that is the case then contact CTC explaining that you misunderstood and that you do have a First Series pass in both CPL and IR.