Dachshunds are notorious for 'ignoring' their potty training. They are independent and can be pretty stubborn when they choose to be. But they are trainable. I remember a dachshund we had years ago. When we moved from Arizona to Tennessee she decided she didn't like going outside when it was cold or rainy. Coming from Phoenix her idea of cold was below 80. So as toedtoes said, you just have to wait them out. Once she figured out she wasn't getting back in the house until she was done she started going pretty quickly. And sticking to a routine will help too.