We just migrated our sites from SP2010 to SP2013 using database attach migration. There is one issue; While we can see all the users in the group in site permissions, everyone is complaining about not having access to the site. If we add users explicitly
they have the permissions otherwise the group will not have any permissions. Does permission get migrated in this approach? Since new web apps are claims based , do we have to perform more steps to get all the permissions migrated to the new environment?
sachin