[Q] Recoveries not flashing?! topic

Hi, I've had my Z2 tablet for a while now. Soon after opening the box, I had the device rooted and cyanogenmod installed, however, this came with a problem that i have now had for ages, whenever i install or update my CM version, it automatically wipes the recovery i have installed, and installs the crappy CM recovery. I have since tried to flash other recoveries, they say they have worked in Command Prompt, but when i boot into recovery, i am greeted by the Cyanogenmod recovery. Help please!

SGP512 Wifi only, 32GB, CM12 Nightly, latest as of 24th Feb 2015