Ordinal follower list not working?

Hi Community,

in order to prevent incorrect segmentation in a German source text, I've added a new word to the ordinal follower list in the used customer's TM. However I'm experiencing that while segmentation is correct for words that have already been listed by default (ordinal follower list exception is working), it doesn't work for my new personalised entry.

Has anyone had similar experiences? Must there be taken something special into account when adding expressions to the list?

Regards,

Bodo