I set up several birthday dates in kaddressbook in the field (personal-birthday). The appear properly in "korganizer". After deletion of a birthday date in the mentioned fields, it still appears in korganizer and can't be deleted there. Kontact reports the entry birthday is "write protected" and can not be deleted. Even a restart of kontact and/or akonadi and/or whole PC doesn't help. What to do? *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Operating System: openSUSE Leap 15.5 KDE Plasma Version: 5.27.4 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8 Kernel Version: 5.14.21-150500.193.ga83ca66-default (64-bit) Graphics Platform: X11 Processors: 12 × AMD Ryzen 5 5600G with Radeon Graphics Memory: 15.0 GiB of RAM Graphics Processor: AMD Radeon Graphics Manufacturer: Gigabyte Technology Co., Ltd. Product Name: B450M DS3H ADDITIONAL INFORMATION If I export a Contact from kaddressbook with a deleted birthday date in LDIF format, delete then the Contact from the kaddressbook and reimport it again, the birthday now will is no more displayed in korganizer.