Hi Rebecca,
Thanks for posting this notice, though it is unfortunate- I consider MozTrap to be one of the best open source test case management systems out there. Your forwarded message mentions that users might have migrated to alternatives. It would be helpful if some of those alternatives could be listed here for comparison purposes.
It would also be helpful if any further details could be shared as to why MozTrap fell out of favor at Mozilla, as I have found it to be a capable tool. I don't intend to pry, I'm just trying to gather more information and strategize, as I currently have an instance of MozTrap in production.
Thanks,
Frank