Ah ok thanks for clearing this up.
I noticed the rwmb-confirmation message has moved from inside the form wrapper to outside when enabling 'edit=true'. Is there a reason for this? as i was targeting the confirmation messages via CSS using the form ID > child element.
e.g. this is what the confirmation html looks like
<div class="rwmb-confirmation">Updated post successfully</div>
<form class="rwmb-form" ........