I have been running a successful football trigger for about 2 months. Yesterday evening while trading 2 matches, the matched bets kept disappearing from the list and randomly reappeared some time later. This caused a problem because I have trade-out triggers which stopped operating and I also have a trigger that deletes any untraded markets at a specific time. This trigger deleted these markets because there were no matched bets in the list.
I suspect this may be a Betfair problem, but since I have never experienced it before, I thought I would ask if there is a known explanation.