Anything to be wary of when deauthorizing devices from an iTunes account?

[brayhite]

I'm trying to update my girlfriend's iPhone for her but unfortunately it won't let her on her own MBP because I've apparently authorized 5 devices with my iTunes. So I was going to use the 'Deauthorize all' function but my only question is will anything be lost or affected, e.g., purchased songs, synced Calendars, etc. when I do this requiring a resync and authorization, or will everything remain on the devices until I reconnect them to my MBP?

 

[RaceTripper]

No, you won't lose any data.

 

[iggypod]

Nope. I just did this recently w/o any issues.

 

[bruinsrme]

No issues. No worries

 

[brayhite]

Thanks a ton guys/girls/people.