FIM upgrade to MIM

Hello All,

I have a requirement where i need to upgrade existing FIM envirornment to MIM.

Actually i have a doubt regarding the synchronization encryption key. I want to know if we use the existing configuration (FIM) encryption key while installing MIM will that restore all the MPRs,Sets,SYnc rule and workflows that are ther in the existing portal? Please confrim.

Regards,

Suman