Due to business requirements, an existing single domain forest will be divided in to three forests (each with single domain) with no forest having any trust relationship with other forests. Each new forest contains a part of existing user set, with the requirement that no user will be part of more than one forest.
Now the requirement is - copy the files along with share and NTFS permissions from existing forest to new forests, and if, say, two users belonging to different forests have access to same data, then copy the data to both the forests and modify NTFS and share permissions in each forest by removing that user who does not belong to that forest.
How do I accomplish this? Thanks in advance.
Note: We will be using ADMT to migrate users.