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I had Zimbra 2 installed on a MAC & a PC (Now I am trying Zimbra 7 Beta)
Both had the same issue:
They would Sync all data between each other (With the ZCS actually) with no issue, except Filters. It seems like if I create a Filter on one unit, the other ignore's it or removes it. If I log into the web client and change a filter... It does not bring it down to the Desktop Clients. Anyone had trouble with Filters?
Bugzilla
Wiki
Source
Zimbra Desktop 2 & 7 Beta & Filters 
Linear Mode
