File Placement Rules Not Working

Hi guys,

I've set up my file placement rules to only allow files in a folder to go into a particular drive.  In this case it's a CloudDrive drive.  I'm finding that it's not following the rule and it just randomly putting it in any drive.  Does anyone know if this is the correct behaviour or whether it's not right.  I essentially only want files in a certain folder to only ever be put in a particular drive.  

I've configured it so that underneath the file placement options I only have the one drive I want it to put the file on, checked.

Any help would be much appreciated.

Thanks,

Phillip