To backfill the historical data for the existing extraction order, you need to do the following:

1. Move to the Settings tab of the required extraction order.
2. Change the first date of the interval to sync historical data from the selected day.
3. Don’t forget to click the Update button to save changes.

IMPORTANT: the maximum historical data depth varies due to the API specifics of different data sources.

After that, historical data synchronization will start, and the extraction order status will change to Syncing.