form_with model altering url parameters for edit form

The REST route for EDIT is overriding the first URL parameter in addition to the last URL parameter but other parameters are unaltered.

How do I stop the form from changing the url first parameter?

views/rounds/edit.html.erb

<h1>Editing Round</h1>

<%= render 'form', round: @round %>
<%= link_to 'Show', round_path(params[:tid],params[:rid]) , class: 'btn btn-primary'  %> |
<%= link_to 'Back', tournament_path(params[:tid]), class: 'btn btn-primary' %>

views/rounds/_form.html.erb

<%= form_with(model: round, local: true) do |form| %>

  ...

  <div class="actions">
  <%= form.submit ( form.object.new_record? ? "Create" : "Update"), class: 'btn btn-primary'%>
  </div>

<% end %>

config/routes.rb

get "tournaments/:tid/rounds" => "rounds#index", as: 'rounds'
get "tournaments/:tid/rounds/new" => "rounds#new", as: 'new_round'
post "tournaments/:tid/rounds" => "rounds#create"
delete "tournaments/:tid/rounds/:rid" => "rounds#destroy"
patch "tournaments/:tid/rounds/:rid" => "rounds#update"
put "tournaments/:tid/rounds/:rid" => "rounds#update"
get "tournaments/:tid/rounds/:rid" => "rounds#show", as: 'round'
get "tournaments/:tid/rounds/:rid/edit" => "rounds#edit", as: 'edit_round'



get "tournaments/:tid/rounds/:rid/matches/:mid/points" => "points#index", as: 'points'
get "tournaments/:tid/rounds/:rid/matches/:mid/points/new" => "points#new", as: 'new_point'
post "tournaments/:tid/rounds/:rid/matches/:mid/points" => "points#create"
delete "tournaments/:tid/rounds/:rid/matches/:mid/points/:pid" => "points#destroy"
patch "tournaments/:tid/rounds/:rid/matches/:mid/points/:pid" => "points#update"
put "tournaments/:tid/rounds/:rid/matches/:mid/points/:pid" => "points#update"
get "tournaments/:tid/rounds/:rid/matches/:mid/points/:pid" => "points#show", as: 'point'
get "tournaments/:tid/rounds/:rid/matches/:mid/points/:pid/edit" => "points#edit", as: 'edit_point'

http://localhost:3000/tournaments/1/rounds/2/edit page form has action:

<form action="/tournaments/2/rounds/2" accept-charset="UTF-8" method="post">

why is :tid being updated to :rid and how do i prevent it.

http://localhost:3000/tournaments/1/rounds/2/matches/3/points/10/edit

has the same problem with :tid being updated to match :pid but all other params are intact.

<form action="/tournaments/10/rounds/2/matches/3/points/10" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓">

How do i ensure the edit page routes do not change the :tid parameter in the URL

Remove all the routes to tournaments, rounds, matches and points and use resources routes

resources :tournaments do
  resources :rounds do
    resources :matches do
      resources :points
    end
  end
end

Then check if it works.