Use a form and CGridview in separate CJuiTabs (with same or multiple models) and submit all CJuiTabs simultaneously.

Comparing #5 with #6

Content

[...]
'collapsible' => false,
),
));
?>

/* IMPORTANT: Put your submit button BEFORE the CJuiTabsActiveForm endWidget() */

... submit button here

<?php $this->endWidget(); ?>
[...]