Upgrading customised FIM to MIM - process and things to be aware of

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  Hello,
   We currently have FIM 2010 R2 in place and we're looking at upgrading MIM 2016. We're using FIM 2010 R2 4.1.3733.0 installed on Windows Server 2008 R2 as follow:

  fimsync01 - FIM Sync Server + sync DB (SQL 2008 R2)
  fimserviceDB01 - SQL 2008 R2 SQL DB for FIM service
  fimportal01 - FIM portal server (also runs SharePoint Foundation 2010)

   My plan is to do the following in a lab environment first:

  1. Upgrade all FIM 2010 R2 server components to the latest version (presumably this will not functionality with the client  component).
  2. Deploy a new server to replace fimportal01. This will be a Windows 2012 R2 server with Share Point Foundation 2013.
  2a. MIM portal will be installed on the new 2012 R2 server, but I'll point the installer to look at my existing 2008 R2 SQL DB.

  I'll be using this guide or similar
  https://blogs.msdn.microsoft.com/connector_space/2015/08/05/performing-an-in-place-upgrade-of-fim-2010-r2-to-microsoft-identity-manager-2016-service-and-portal/

  I have a few questions:

  1. I have extended the FIM portal schema to add new objects and attributes, will this cause an upgrade issue?
  2. I've automated run profiles using scheduled tasks and scripts, these scripts reference GUIDs on the sync server - presumably I need to  
     amend these scripts?
  3. I have customised the FIM portal, presumably I'll need to customise the portal again?
  4. Is MIM compatible with existing FIM client plugins? We're using the SSPR plugin.

  Thanks in advance

  Thursday, September 22, 2016 2:42 PM