How a refresh operation reconciles a target list against its source.
Additive: only adds new members from the source; never removes.
Sync: makes the target exactly equal the source — may remove members
that are no longer in the source. This is the only refresh mode that can
produce drops, and therefore the only one that requires ConfirmDrops.
How a refresh operation reconciles a target list against its source.
Additive: only adds new members from the source; never removes.Sync: makes the target exactly equal the source — may remove members that are no longer in the source. This is the only refresh mode that can produce drops, and therefore the only one that requiresConfirmDrops.