SUMMARY
Hello, I downloaded the Thunderbird AppImage and I wanted to have it in the "Start" menu. So I've created a new entry in the menu using kmenuedit. Everything worked fine and the application starts correctly.

Then I've choosed to switch from the AppImage to the Snap Package, so I needed to remove that manual entry created for the Thunderbird AppImage. I've done it through the kmenuedit application and the entry has been removed.

Now, if I *search* "Thunderbird" in the kickoff launcher search it still finds that manual "Thunderbird" menu voice! This happens because the local search find the .desktop file in the folder "/home/USER/.local/share/applications" which has not been deleted when I deleted the manual entry from kmenuedit (I suppose).

STEPS TO REPRODUCE
1. Create a new entry in the menu using kmenuedit
2. Check that it can be found using the search from the kickoff launcher
3. From kmenuedit, delete the entry previously created 
4. The entry is not shown in the menu, but it appears when searching from the kickoff launcher
5. That entry refers to the .desktop file in the /home/USER/.local/share/applications folder

OBSERVED RESULT
Manual entries are still shown when searching from the kickoff launcher, even if they have been deleted from the menu

EXPECTED RESULT
Deleted entries should not be shown when searching. They should be really deleted.

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.25
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5
Kernel Version: 5.15.0-46-generic (64-bit)

ADDITIONAL INFORMATION