BS3: two remote sources and one dialog
HTML
<link rel="stylesheet" href="//getbootstrap.com/dist/css/bootstrap.css">
<script src="//getbootstrap.com/dist/js/bootstrap.js"></script>
<a data-toggle="modal" href="//fiddle.jshell.net/bHmRB/51/show/" data-target="#myModal">Click me #1</a>
<a data-toggle="modal" href="//fiddle.jshell.net/bHmRB/79/show/" data-target="#myModal">Click me #2</a>
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
</div>
</div>
</div>
JavaScript
$("a[data-toggle='modal']").on('click', function () {
$('#myModal').removeData('bs.modal');
});