Menu/Setup/Alerts and Warnings/Traffic Alerts
With iFly up and running, click on Menu, then click on Setup, then click on Alerts and Warnings, then click on Traffic Alerts, then Put a checkmark next to Filter Ghost Traffic
Also be sure and configure your Aircraft Profile, including your N-Number. If the traffic report includes an N-Number (not all of them do!), we can use that in the ghost filtering.
I have found ghosting occures when maneuvering. The program picks up a turning aircraft as an intersecting target aircraft which then follows me. .
Even with everything setup properly it's possible to see a ghost. If this happens touch the target and select "Track", this will remove it from the alert system.