ADMT v3.2 Cross forest migration - Regular Groups sync between source and target

Hi,

I'm performing a cross forest migration with ADMT v3.2 over the course of several weeks.

I have successfully migrated user accounts and mailboxes from source to target with additional powershell scripts.

My question though is how do I ensure group membership is updated between source and target domains DURING the course of the migration?

Do I just run the Group wizard again (wth includes file) in ADMT? If so which tick boxes do I select?

Is there a better way to do it?

Thanks
Nathan