Side-by-side FIM to MIM upgrade

Hi,

Are the steps detailed in this guide applicable to moving configuration from FIM to MIM?

https://docs.microsoft.com/en-us/previous-versions/mim/ee534906(v%3dws.10)

1. Back up the pilot and production environments by using the Backup and Restore procedures.

2. Export the FIM Service schema configuration.

3. Export the FIM Synchronization Service configuration.

4. Export the FIM Service policy and FIM Synchronization Service configuration resources.

5. Install the MIM Synchronization Service and the MIM Service in the production environment.

6. Enable the maintenance mode in the production environment.

7. Import the FIM Service schema configuration into the new MIM environment.
   

8. Import the FIM Synchronization service configuration into the new MIM environment.
   

9. Install the custom DLLs/Custom Activities/etc necessary for custom workflows.

10. Import the FIM Service policy and FIM Synchronization Service configuration into the new MIM environment.
    

11. Disable maintenance mode in the production environment.

I guess installing the new MIM solution using existing databases will not work, as we have some additional elements in our solution like: PowerShell activities and another custom activity library (from Soren Granfeldt). A bit of a catch-22 scenario.

Thank you.

SK