Sync to IPhone creates duplicates

[somy]

Hi,

Today I tried to sync all songs from MM4 to my IPhone4 which already contains most of songs that are synced by MM3 last month. It seems to me that MM4 failed to recoganized those songs that are already transferred to IPhone, and creates duplicates for them......

To solve the issue, I'd like to ask whether I can instruct MM4 to remove all songs from IPhone?

[Lowlander]

Do you have Delete files and playlist not included in the Auto-Sync list from device enabled? Did you use Auto-Sync in MM4? Are you using build 1434?

[rusty]

Yes Somy,

MediaMonkey won't create duplicates if it's synched from the same library. To solve your current situation, in Device Profile > Options > Autosync, enable 'Delete files and playlists not included in the autosync list from the device'.

-Rusty

[somy]

Sorry, my bad.
The library is different as when I upgrade to MM4 I re-created the lib.