> CSV export isn't under save because it doesn't retain all the details of the document (such as formatting). This behaviour is standard and can be seen in MS Excel, LibreOffice, etc. as well.
Office warns me my changes will be lost and offers to change to XLSX. Numbers just changes it silently, without warning.
Office warns me my changes will be lost and offers to change to XLSX. Numbers just changes it silently, without warning.