Unmatched Bets not being Matched

Hi
I have a Dutching trigger that fires off the back bets okay, but unmatched bets aren't being matched even when the price drifts way past the price I've stipulated - see for example Verus Delicia in the screenshot attached. Could one of the settings cause this behaviour, such as ticking the match at SP box for unmatched bets? The price of this horse drifted further but was still not taken by MF Pro in test mode. This is happening repeatedly with other horses and races.
Regards
Ed.

Hi
Problem solved. A "Cancel and Back at SP" trigger was firing earlier than intended and at the same time as the main trigger so unmatched back bets included both triggers unmatched bets.
Regards
Ed.