I am facing issues while doing the Mobile Push implementation. I was just wondering how does the merging happens, as in the below scenario I am getting a duplicate contact key.
Install the App on IOS
It created a new Contact Key (123456) in Mobile Push
Login in the app and the following gets updates for ContactKey 123456
Now uninstall the app
Reinstall the app in IOS
It created a brand new ContactKey 123457
Logged in the app and the following gets created for ContactKey 123457