[qiulan]

Hello everyone!
I split a zone into two parts, one using tetra,the other using hexa。When I merge nodes on the interface between the two parts, errors always occour, saying 'I am trying to include edge XXX,but vertex isn't even in the region1' 'unable to include quade xxx''. I desperately want to know why and how to deal with this problem? And when I check the grid, there are always some non-manifold vertexes it cann't fix. How can I deal with them? Thank you very much!