Just a thought Susanne. I don't think any plant would be killed if you failed to rest it for one winter season. The worst possible senario might be that you would not get flowers. I know some people who do not rest some of their younger seedling Dendrobiums because they want growth. Den. aggregatum and jenkensii will continue to grow if watered frequently. My friend grows hers with her Cattleyas and they always flower nicely in the spring.