Q.Christmas cactus
I have 3 Christmas cactus’, 2 of which are from my Grandmothers. For 27 years they have gotten big and produced hundreds of blooms at my house. Then I moved & have been in smaller house for 2 years ‘during which my cactus’ have lost all leaves and left nothing but woody stems. What happened? I do not have any pictures.

Certified GKH Gardening Expert
The most common issues leading to this is a change in temperature, lighting, or humidity. It is possible that moving caused a shock. Here is an article that will guide you to finding out what is going on with it: