Moodle in English

You could pre-process the CSV file using Excel or Google Sheets, and map the internal custom id to the ID number using the XLOOKUP function.

This video might help:

See https://moodle.org/plugins/report_editdates

The Moosh command-line tool supports importing Moodle Question XML files directly into a quiz (see https://moosh-online.com/commands/#question-import) or a question bank category (cf. https://moosh-online.com/commands/#questionbank-import). However, you must specify the quiz ID or the question bank category ID, which might be tricky. You also need command-line access to the Moodle server for this approach. A better solution would be to write an XSLT script to combine multiple files into one, and then import the final output into a course question bank, see https://stackoverflow.com/questions/9693431/combine-multiple-xml-urls-into-one-xml-file-with-php-xslt for a starting point.

Typing any few letters of the category you want should shorten the list to those categories that match, and you can then use the down-arrow key on your keyboard to iterate through them.