Enterprise mode and Document mode

hello

i've set "Enterprise mode" with a share central file xml implemented in a GPO.

I've build the xml file with the last updated "EMIESiteListManager".

60 web applications are set in the XML file and they are running as intended with the right compatibility settings.

But I have one strange behavior for one application.

for example:

I have set www.trpf.com as IE5 document mode andwww.trpf.com\srt as IE8 document mode.

the results are:

www.trpf.com\srt is rendered as IE8 but www.trpf.com is also  rendered as IE8 where it would be IE5 ?

other web apps like www.trpf.com\xdf are also rendered as IE8  ?

I have missed something ?

Thank you for your help