Created attachment 198982 [details] Demonstration video Related to bug #165048. Please test using the same sample, attachment #198981 [details]. To reproduce: 1. Click one of the two months, in A3 or A4 2. Go to “Data > Group”, then add “Year” AND "Quarter" in addition to Month Result: LibreOffice Calc prompts about whether you want to overwrite, but doing so (clicking "Yes") completely wipes out the contents of the adjacent cells in columns E and F, which were not part of the pivot table. The problem is, there is no alternative. Clicking "No" in that dialog (which should really be labelled "Cancel", because it doesn't do anything) does not shift the cells for you. This is not very useful, and it is dangerous, as there is currently no Undo for this. Instead, it would be much more useful if it could offer to insert extra columns (or rows, depending on the situation) for you, so that those adjacent cells are safely shifted. Or to shift only the affected cells. (in both cases, formula refs would need to be updated, as per bug #165048) Maybe the dialog could offer these choice buttons instead: * "Cancel" * "Shift the affected cells" (or "Insert 2 columns") * "Overwrite" --- Tested on: Version: 25.2.0.3 (X86_64) / LibreOffice Community Build ID: e1cf4a87eb02d755bce1a01209907ea5ddc8f069 CPU threads: 8; OS: Linux 6.12; UI render: default; VCL: gtk3 Locale: en-US (en_US.UTF-8); UI: en-US Flatpak Calc: threaded