Go To (F5) how to delete unwanted entries in the reference list

Each time I use the F5 Go To feature to select a named range in order to do a custom search, new reference (locations) entries appear. They appear to be created by where my cursor is when I run the F5 command. These entries are building up in the reference list.  1) How can I delete them from the Go To list?  2) Is there a way to prevent this from occurring? 

Thanks!