Editor - Particles won't go away... glitch? HELP PLEASE

[Racingcreed]

I was testing the particles on the flicker option of a light source, then decided to remove it entirely, but once I removed the light source, the particles remain. I tried loading an earlier save but it's still there.... How do I get rid of them?

Her'es a screenshot...

http://cloud.steampowered.com/ugc/703980...FCBB22029/

Help............?

[DeAngelo]

Have you deleted your map cache files?

[Daemian]

Once you place particles, you can't get rid of them, you are bound to them forever.

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Try what DeAngelo said, if no luck, restart the editor.
And as last option, edit the .map as text.