I did read about the Australian government's effort in trying to control the population of Apis cerana since it was discovered in Australia because it is believed to be a natural host of mites which can kill Apis mellifera. Kindly correct me if I'm wrong about this info.
Anyway, I was actually very careful not to mingle the specimens of Apis cerana in my mellifera hive. I only had 3 specimens of cerana and their now dead or rather I suffocated them when I placed them in a locked jar without air holes.
Like you I also find Apis cerana to be quite interesting because their really like a miniature version of Apis mellifera having similar features even the yellow and black colored abdomen.