seems to work without overiding the main issues _form

app/views/customers/_actions.html.erb

@@ -1,9 +1,9 @@
-<%= link_to t(:label_appointment), "https://calendar.google.com/calendar/render?action=TEMPLATE&text=#{@customer.name}+-&details=#{ link_to t(:customer_details), "https://#{Setting.host_name}#{customer_path @customer.id}"}%0A#{@customer.primary_phone}&dates=#{Time.now.strftime("%Y%m%d")}T090000/#{Time.now.strftime("%Y%m%d")}T170000", target: :_blank %>
+<%= link_to t(:label_appointment), "https://calendar.google.com/calendar/render?action=TEMPLATE&text=#{@customer.name}+-&details=#{ link_to t(:customer_details), "https://#{Setting.host_name}#{customer_path @customer.id}"}%0A#{@customer.primary_phone}%3Cbr/%3E+&dates=#{Time.now.strftime("%Y%m%d")}T090000/#{Time.now.strftime("%Y%m%d")}T170000", target: :_blank, id: :appointment_link %>
 
 <br/>
 <br/>
 
-<%= button_to t(:label_create_estimate), "https://qbo.intuit.com/app/estimate?nameId=#{@customer.id}", target: :_blank, method: :get %>
+<%= link_to t(:label_create_estimate), "https://qbo.intuit.com/app/estimate?nameId=#{@customer.id}", target: :_blank %>
 
 <br/>
 <br/>

app/views/estimates/_list.html.erb

@@ -2,6 +2,7 @@
 
   <% estimates.sort.reverse.each do |estimate| %>
     <div class="row">
+      <%= check_box_tag "estimate_ids[]", estimate.id, false,  onchange: "updateLink()",  data: { url: estimate_path(estimate), text: "Estimate ##{estimate.to_s}" }, class: "estimate-checkbox appointment" %>
       <b><%= link_to "##{estimate.doc_number}", estimate_path(estimate), target: :_blank %></b> <%= estimate.txn_date %>
     </div>
   <% end %>

app/views/invoices/_list.html.erb

@@ -12,7 +12,7 @@
 
     <% invoices.sort.reverse.each do |invoice| %>
       <div class="row">
-        <%= check_box_tag "invoice_ids[]", invoice.id, false, class: "invoice-checkbox" if invoices.count > 1 %>
+        <%= check_box_tag "invoice_ids[]", invoice.id, false,  onchange: "updateLink()", data: { url: invoice_path(invoice), text: "Invoice ##{invoice.to_s}" }, class: "invoice-checkbox appointment" if invoices.count > 1 %>
         <b><%= link_to "##{invoice.doc_number}", invoice_path(invoice), target: :_blank %></b> <%= invoice.txn_date %>
       </div>
     <% end %>

assets/javascripts/application.js

@@ -0,0 +1,22 @@
+function updateLink() {
+  console.log("updateLink called");
+  const linkElement = document.getElementById("appointment_link");
+  const regex = /((?:<br\/>|%3Cbr\/?%3E))([\s\S]*?)(&dates)/gi;
+  linkElement.href = linkElement.href.replace(regex, `$1${getSelectedDocs()}$3`);
+}
+
+function getSelectedDocs() {
+  const appointent_extras = document.querySelectorAll('.appointment');
+
+  let output = '';
+for (const item of appointent_extras) {
+    if (item.checked) {
+      console.log(`Checked item: ${item.dataset.text} with URL: ${item.dataset.url}`);
+      output += `%0A`+ encodeURIComponent(`<a href="${window.location.origin}${item.dataset.url}">${item.dataset.text}</a>`) +`%0A`;
+    }
+  }
+  
+
+  // You can return the array or use it as needed
+  return output;
+}

config/locales/en.yml

@@ -100,4 +100,5 @@ en:
   notice_forbidden: "You do not have permission to access this resource"
   notice_issue_not_found: "Issue not found"
   customer_details: "Customer Details"
-  notice_error_project_nil: "The issue's project is nil, set project to: "
+  notice_error_project_nil: "The issue's project is nil, set project to: "
+  notice_error_tracker_nil: "The issue's tracker is nil, set tracker to: "

init.rb

@@ -14,7 +14,7 @@ Redmine::Plugin.register :redmine_qbo do
   name 'Redmine QBO plugin'
   author 'Rick Barrette'
   description 'A pluging for Redmine to connect with QuickBooks Online to create Time Activity Entries for billable hours logged when an Issue is closed'
-  version '2026.2.0'
+  version '2026.2.5'
   url 'https://github.com/rickbarrette/redmine_qbo'
   author_url 'https://barrettefabrication.com'
   settings default: {empty: true}, partial: 'qbo/settings'

lib/redmine_qbo/hooks/issues_hook_listener.rb

@@ -14,23 +14,15 @@ module RedmineQbo
 
       include IssuesHelper
 
-      # Check the new issue form for a valid project.
-      # This is added to help prevent 422 unprocessable entity errors when creating an issue 
-      # See https://github.com/redmine/redmine/blob/84483d63828d0cb2efbf5bd786a2f0d22e34c93d/app/controllers/issues_controller.rb#L179
-      def controller_issues_new_before_save(context={})
-        if context[:issue].project.nil?
-          context[:issue].project = projects_for_select(context[:issue]).first
-          context[:controller].flash[:error] = I18n.t(:notice_error_project_nil) + context[:issue].project.to_s
-        end
-
-        return context
-      end
-
       # Edit Issue Form
       # Here we build the required form components before passing them to a partial view formatting. 
       def view_issues_form_details_bottom(context={})
+        Rails.logger.debug "RedmineQbo::Hooks::IssuesHookListener.view_issues_form_details_bottom: Building form components for quickbooks customer, estimate, and invoice data"
         f = context[:form]
         issue = context[:issue]
+        project = context[:project]
+        Rails.logger.debug issue.inspect
+        Rails.logger.debug project.inspect
 
         # Customer Name Text Box with database backed autocomplete
         # onchange event will update the hidden customer_id field
@@ -42,11 +34,23 @@ module RedmineQbo
             value: '#issue_customer' 
           }
 
+        # We need to handle 3 cases for the onchange event of the customer name field:
+        # 1. New issue Withough project:  /issues/new.js
+        # 2. New issue With project:      /projects/rmt/issues/new.js
+        # 3. Existing issue:              /issues/<ID>/edit.js
+        # The built in helper update_issue_form_path requires a project object to determine the correct path for new vs existing issues, 
+        # but it doesn't work for issue.project when creating new issues not in a project i.e. http://redmine.domain.com/issues/new . 
+        # So we need to figure out how to get a the @project from the controller calling the hook.
+        #
+        # If this is not handled correctly, it leads to a 422 error when creating a new issue and selecting a customer.
+        js_path = "updateIssueFrom('#{escape_javascript update_issue_form_path(project, issue)}', this)"
+        Rails.logger.debug js_path
+
         # This hidden field is used for the customer ID for the issue
         # the onchange event will reload the issue form via ajax to update the available estimates
         customer_id = f.hidden_field :customer_id,
           id: "issue_customer_id",
-          onchange: "updateIssueFrom('#{escape_javascript update_issue_form_path(issue.project, issue)}', this)".html_safe
+          onchange: js_path.html_safe
 
         # Generate the drop down list of quickbooks estimates owned by the selected customer
         select_estimate = f.select :estimate_id, 

lib/redmine_qbo/patches/issues_controller_patch.rb

@@ -15,6 +15,7 @@ module RedmineQbo
 
       module Helper
         def watcher_link(issue, user)
+          link = ''
           link = link_to(I18n.t(:label_bill_time), bill_path( issue.id ), method: :get, class: 'icon icon-email-add') if user.admin?
           link << link_to(I18n.t(:label_share), share_path( issue.id ), method: :get, target: :_blank, class: 'icon icon-shared') if user.logged?
           link.html_safe + super