Player character is triggering collisions in places where triggers used to be

Hi. Would appreciate any help with this.

I have a number of triggers set up in my level - they are used to activate widgets in the level blueprint.

The problem is that the triggers are being activated when moving around the level, but the actor is not touching any of the triggers.
There was no problem with the triggers until I started moving them around.

Not sure if this is a problem with the cache, or with me having re-named some triggers. Does UE store a cache of where trigger volumes have been? Even though they are not there any more?