You could be right actually. I remember Liverpool playing a Finnish team in Europe in the early 90s when the backpass rule had just come in. But it wasn't introduced to the Finnish league yet as they ran summer soccer and the rule wasn't coming in there until the end of the season. So the Finnish team had two different rules at the same time depending what tournament they were playing in. Probably the same here alright; the same foul in the europa league the day before would only have been a yellow.