Likely that they have both versions running beside eachother; I'm thiking that we need a utility in the CP that checks the version...
You can create a "test.php" file which has the following which should read out the version (be sure to update "convert_path" to be your path):
<?php
function ImageMagick_version() {
$convert_path = '/usr/bin/convert --version';
$return = shell_exec($convert_path);
$x = preg_match('/Version: ImageMagick ([0-9]*\.[0-9]*\.[0-9]*)/', $return, $arr_return);
return $arr_return[1];
}
echo(ImageMagick_version());
?>Should read out something similar to: 6.2.8