I want to know which information is containing within the delta files and which information only occurs in the full addressbook file.

I'm currently testing a scenario and will know in the next 6 days if that is correct.

If for example you update the Active Directory Account Job Title field - does that form part of the delta file or does that only stay in the full addressbook file.

I have reason to believe that it only updates on the lync client after the csaddressbook keepduration interval.

In theory any AD updates should reflect on a lync client after 48 hours after updating Active Directory.

If my test proves that it only updates certain fields from AD (like the job title) to the Lync full addressbook file after the keepduration parameter, then I'm afraid MS has not thought this process through properly. Currently the keepduration default setting is 30 days and I want to point out that I'm not using the registry fix from Jeff Schertz as I want to test the normal lync 2010 behaviour.

I'm only testing with the Active Directory Job Title field at the moment, but if there is a list out there that can specify which fields are included in the addressbook delta files and which field only updates in the full addressbook file it will be great to have that information handy as I need to explain to a client why it only updates on the lync client after such a long time, which coincides with the keepduration setting.

Any information will be appreciated, but I will also post my results here next week.

Hi,

I will involve a Microsoft engineer on this post and they may provide some instructions.