Harvest plenty of documents

Searching on a source can give a high number or matches. There is a Select all, which selects only of the current page. In the case of the screenshot, with more than 1k entries, is the user supposed to change the number of records to 50 per page, and do the harvest once per page (for a total of more than 20 harvests)?

It might be better to have a button to select all from all pages