Twonky sorting in "By Folder" Mode

I’m referring to this topic:

Twonky sorts in “by Folder” Mode always by title in alphabetic order and not in track nr. order.
I could solve this problem by editing the Twonky view-defininitions.xml file doing this modification:

<container name='byfolder' id='music/folders' class='object.container.storageFolder' createClass='object.item.audioItem.musicTrack'>
				<container buildon='res' albumart='1' sortcriteria='+pv:numberOfThisDisc,+upnp:originalTrackNumber' createClass='object.item.audioItem.musicTrack' class='object.container.storageFolder' />
			</container>

Now after updating firmware to v04.05.00-315 I did this modification again but with no success, sorting oder ist still by title in alphabetic order.
Does anyone know about this problem and can give a solution ?

There are no official support articles related to such proceedings. Hopefully an experienced User will be able to assist.