Logfile Grouping Patterns doesnt work

Hello after updating from 1.6p13 raw to 1.6.0p17 raw I see some warnings “Duplicate service description …”, it is related to the name of the group of logs. I deleted everything from “Logfile Grouping Patterns” and the group logs are still in the service list while I removed everything and of course I did full scan and apply changes in Host. How to remove the Logfile Grouping Patterns and add new Logfile Group Pattern? Now it doesnt work

If you have no grouping rules left inside WATO then you need to check inside your "~/etc/check_mk/ folder if there are some *.mk files exist with definitions for the log file grouping.
All *.mk files below the wato folder should not be touched.