WordPress: When you want to pull in existing records from SalesForce via object-sync-to-salesforce

functions.php

<?php
//Add this to your functions file TEMPORARILY (just long enough to do the first sync), then remove

add_filter( 'object_sync_for_salesforce_pull_query_modify', __NAMESPACE__ . '\\change_pull_query', 10, 4 );
// can always reduce this number if all the arguments are not necessary
function change_pull_query( $soql, $type, $salesforce_mapping, $mapped_fields ) {

	$soql->conditions[0]['value'] = '2015-11-22T22:49:09Z';//change this date to early enough to capture your records

	return $soql;
}