Today APSIS One has a 10MB file size limit. If your export exceed this size, the export will most likely time out, fail and nothing will be exported.
Exporting a Topic?
Reach out to our support team and they will help you with the export.
Exporting a segment or a report?
Try to divide your export into smaller batches by using the segment builder to stay inside the file size limit.
If that's not possible, please contact Support.