Batch export does not always do all the presets selected

Hi

When exporting from lightroom using the batch mode, I check the presets I want to use usually between 4 and 5 and often it will only export 3  or 4.  At the moment I selected 4 but only 2 are exporting.   Currently on LRC 13.0.2 and MacOS 12.7.1 but it has happned on early versions of LR and MacOS. 

 Am I doing something wrong?  I have checked the boxes and set destinations.

Cheers

Craig