I've found the reason. The best option for you will be to change this file: modules/Premium/Sync/SyncCommon_0.php
Line 109:
There is:
public static function format_crits($tab, $crits) {
if (!$tab || !$crits) return ''; // <-- only this line will be changed
$preparsed = Utils_RecordBrowserCommon::build_query($tab, $crits);
Change to:
public static function format_crits($tab, $crits) {
if (!$tab || !$crits || $tab == '__RECORDSETS__' || strpos($tab, ',') !== false) return '';
$preparsed = Utils_RecordBrowserCommon::build_query($tab, $crits);
It will not generate crits for select fields, where you can select more than one type of record.
Regards,
Adam