One can select multiple cols for the Memo field. The cols are then concatenated. However, in the GUI there is no user feedback that multiple cols have been selected, you just select them one after another using a dropdown field. The resulting config in csvimporterrc is like: MemoCol=13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
See https://bugs.kde.org/show_bug.cgi?id=392165 for an invalid ticket that was created due to missing feedback from the UI
*** This bug has been marked as a duplicate of bug 404156 ***