exchange-2.0/app/Classes/Modules/Bookings/Services/UpdatesBookingTransaction.php

<?php

namespace App\Classes\Modules\Bookings\Services;

use App\Classes\General\Eloquent\AbstractUpdateRecord;
use App\Classes\Modules\Bookings\DataTransferObjects\BookingMergeObject;
use App\Models\Booking;

class UpdatesBookingTransaction extends AbstractUpdateRecord
{
    /**
     * @param Booking $booking_main
     * @param mixed $bookings_to_merge
     * @param BookingMergeObject $object
     * @return \Illuminate\Database\Eloquent\Model
     * @throws \App\Classes\Exceptions\MalformedRequestException
     */
    public function execute(Booking $booking_main, $bookings_to_merge, BookingMergeObject $object) {

        foreach($bookings_to_merge as $booking) {
            $bookings_to_merge_transactions = $booking->transactions()->get();

            foreach ($bookings_to_merge_transactions as $transaction) {
                var_dump( $transaction->booking_id);
                $transaction->booking_id = $object->getId();
                $this->handler($transaction);
            }
        }

        $booking_main->fix_amount=$object->getBookingAmount();

        return $this->handler($booking_main);
    }
}