Forum Discussion
Upgrade user profile service from SharePoint 2013 to SharePoint 2016
You've got the upgrade path down pat.
For what you lose with AD Import, here's the laudry list of stuff that doesn't work or has different behavior - https://technet.microsoft.com/EN-US/library/jj219646.aspx (more at https://blogs.msdn.microsoft.com/spses/2015/03/04/sharepoint-2013-active-directory-import-and-known-behaviors/).
You can still import custom attributes.
For MIM, you want to upgrade the UPSA databases first, as MIM will need an active UPSA in order to function. As for the URL, you point MIM at the Central Administration URL. I've also blogged about this at https://thesharepointfarm.com/microsoft-identity-manager-series/.
You've got the upgrade path down pat.
For what you lose with AD Import, here's the laudry list of stuff that doesn't work or has different behavior - https://technet.microsoft.com/EN-US/library/jj219646.aspx (more at https://blogs.msdn.microsoft.com/spses/2015/03/04/sharepoint-2013-active-directory-import-and-known-behaviors/).
You can still import custom attributes.
For MIM, you want to upgrade the UPSA databases first, as MIM will need an active UPSA in order to function. As for the URL, you point MIM at the Central Administration URL. I've also blogged about this at https://thesharepointfarm.com/microsoft-identity-manager-series/.