erinninn
The only way I found was to delete the POI file, and reinstal the ones you want with the POI installer. I put mine on the SDcard only, and do not transfer to the unit when starting up.
I prepare all my POIs on hard disk, delete or add as needed, run POI Loader, copy everything to SD card.
Do not delete folder on hard disk, use again when making changes.
I never put any POIs onto my GPS, only use SD card