Приведу порядок выполнения запросов и JSON ответы на примере таблицы Моточасы в отчете.
В ответ приходят весь контент отчета : название, сколько таблиц, какие таблицы и т.д
К примеру, нам нужно таблица Моточасы, т.е name: "unit_engine_hours", ниже JSON по этой таблицы
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Запросы и ответы по отчетам так всегда работали постоянно. Пример работы с ними, получения данных очень детально описан в документации, также в описаниях самих запросов указано какие параметры и как нужно использовать. Если у вас возникают вопросы/уточнения, пишите, пожалуйста, в этой ветки форума, мы как разработчики с удовольствием поможем понять API.
Еще раз повторю изменения коснулись только перевода названия, которые никаким образом не затронули сам код. Мы со своей стороны не вносили никаких изменений в функционал (в код) получения отчетов, и пользователи как работали на сайте с отчетами, так и продолжили работать. К сожалению, у каждого разработчика может быть своя, и далеко не всегда корректная реализация, и уже предугадать, что именно делают, как парсят, как используют данные и т.д, нет возможности. С нашей стороны мы максимально предоставляем все средства. К примеру, как в этом случае вы получает и текстовые данные отформатированные, и исходные числовые, и даже типы этих данных.
Уже ваше решение как сделать грамотную разработку.