Thank you for the response and the main thing is that your results mirror mine. I had read the documentation but honestly would not (and still do not) think
" Some non-critical information is not included with the export when using the
.csv file format."
adequately prepares a user for the process omitting complete classes of data - I really think it would help to just say “Card and ID records will not be exported in csv format”.
I understand why it can’t be done due to column differences but may be worth considering 3 files with name suffixes, or selectable record types to include for each export.
Anyway - the data is there in json so I’ll accept it as the way it is. Thanks again.