Great question — answering as the UphillTech team:
Finally found the answer here: https://wordpress.stackexchange.com/questions/304237/increase-product-variation-limit-in-woocommerce just add the lines below to wp-includes/functions.php function wpse_rest_batch_items_limit( $limit ) { $limit = 1000; return $limit; } add_filter( 'woocommerce_rest_batch_items_limit', 'wpse_rest_batch_items_limit' );
Full answer by nightm0re: https://stackoverflow.stackexchange.com/a/62080266 (CC BY-SA 4.0).
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