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I want be sure, why i have to do it in production, I can' t do error.
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Yeah i get the point. You can get a lot of search results in forum and zimba wiki on steps to follow while doing an upgrade. All of them suggest the basic fact to take a full backup of your accounts and then keep a copy of /opt/zimbra. Then you should be good to go.
Keeping a test box helps a lot, like when there are basic hacks and work arounds for stuffs we can go ahead testing and implying it.
In between I haven't updated forum profile with my latest version .. lol. So all of you who do that .. don't forget this simple step too.
