They are returning as captains in terms of pay & benefits but will operate in the RHS for the duration of this contract as that’s where the requirement is.
As & when their contracts are made permanent, whether it’s after summer or some point further along any recovery then they’ll slot back in the seniority list with their original date of joining (minus time in the hold pool).
If they’re senior enough they’ll return as captains, displacing more junior captains if necessary who will then be possibly demoted.
That’s the current plan, we’ll see if they try to move the goal posts in six months.