949 votesworking on it · AdminSharePoint UserVoice Admin (SharePoint UserVoice Admin, Microsoft SharePoint) responded
This was just demoed at Ignite 2018 session BRK2136. Read more about it : https://techcommunity.microsoft.com/t5/Microsoft-SharePoint-Blog/Build-your-modern-intranet-with-SharePoint-in-Office-365-Ignite/ba-p/255453Gabibis commented
if I have a Classic Publishing root site today with various subsites, what happens to those subsite when we run the CommSite PowerShell cmdlet? Do those stay as they are, or are those deleted?