Trying to rename an older query works for a moment, but if I open the DB again, the old name exists again
Fixed for #379078. Will be released with 3.0.2. See this comment: https://bugs.kde.org/show_bug.cgi?id=379078#c3 Workaround until 3.0.2 is released: use the AppImage version from May just for renames (https://community.kde.org/Kexi/Snapshots). Or the <= 2.9.x version. *** This bug has been marked as a duplicate of bug 379078 ***