Question my schema looks like

definition team {
  relation manager: member_account
  relation direct_member: member_account 
  relation child: team

  permission member = manager + direct_member  + child->member
}

when I am defining a parent-child relationship between the teams, for example

team:Amce#child@team:executive
  team:Acme#child@team:engineering

it seems the second relationship overrides the first relationship. The evaluation for "member" permission is only walking down engineering child path and not executive path as well.