Hi, I have a strange problem. Trying to model a 2D floodplain area, so at the end of the cross sections along the reach I have a lateral structure which over tops the lateral weir and then the 2D area floods. What is strange is that a huge discharge (and volume) comes back from the 2D area back into the river. So the Flow HW DS is much bigger than the Flow HW US, while I expected it to be smaller. Also, the weir flow is dominantly negative which means the 2D area is feeding the river, and huge. It doesn`t make sense. Especially since the difference between the Flow HW DS and Flow HW US doesn`t match the Flow leaving. Please look at the images attached. Is it a bug or I am doing something wrong? Best regards.