Some unique User in both experience while testing on a mobile APP

[tejpalsinghsahni]

we launched an A/b Test for a mobile app and use A4T for reporting, in the report what we are seeing is some users are part of both the experiences.

What would be the reason for that on a mobile app.

[alexbishop]

Does that mean you're seeing the same visitor, identified via ECID, in both Exp A & B? Or the same visitor, identified via some sort of Customer ID?