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Upgrade from v3 to v4

swopedesign

Regular Pleskian
I have several sites using SB3. I wish to upgrade to SB 4. Will this upgrade harm the sites already created in SB 3? Or do I run SB3 and SB4 concurrently? What guffaws might I expect from this upgrade for existing customers?
 
Will v3 Users be able to update their sites successfully with v4?

So will v3 users be able to update their sites with v4 without losses? Since v3 and v4 will not run simultaneously, they will then be using v4 for their sites. So I want to be sure. Thanks.
 
Sitebuilder users from v.3 which will be migrated to v.4 should work fine without any problems. Anyway, before upgrade and migration procedure it is suggested to make full Sitebuilder backup, just in case.
First step is upgrade and after that migration. Just follow documentation and everything should be fine.
 
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