There is no product pimdataexporter so I placed it here in pimsettingexporter... Current Version is 5.22.3 (22.12.3), but the bug exists since a long time. (The below mentioned bug ID 429895 is fixed in version 5.16.2. So this fix should be included in 5.22.3) The zip is exported on Leap 15.5 without any problems and should be imported on Leap 15.6 (Same computer, Multi-Boot-System, Standard KDE Installations with latest service packs). ZIP-File size 2.2 GiB. The import terminates immediately with a German massage, free translated 'Invalid ZIP file'. System log reports 'Unexpected end of file (#1)': 2024-07-21T12:42:26.087999+02:00 localhost pimdataexporter[3028]: org.kde.pim.pimdataexportercore: Impossible to open archive: "/home/Friedrich/Downloads/Backup-KMail.zip" zip error : "Ungültige ZIP-Datei. Unerwartetes Dateiende. (#1)" How can you debug this issue to get further details? (What is the easiest way to install the latest PIM version for testing?) Or is this file size of 2.2 GiB not supported?