There are several documentation on the powerlink.  Home > Support > Technical Documentation and Advisories > Software ~ P-R ~ Documentation > RecoverPoint   Depending on your environment (splitter or host) you will have special deployment documentation.  I am not aware of any specifically for migrations.
 Hi: Customer is using RP just for migration. Do we still need splitter on the source even though it is juts migration. Regards, Gopal.
RP for Migration