It appears this is seen across all R10 flavours and with "different symptoms".
Migration - then all alarms are affected. FT-switching - then "many alarms" are affected.
Hopefully this forum will help to retrieve as much as possible info to get a better (and important) focus on that.
I would encourage everybody reading this to add in his experience for "recreated alarms" even the very same alarm already exists. Due to this the new alarm will clearly NOT cover the initial alarms updates (ie ACK, Troubleshooter .. ticket etc ...).
Thanks, Joerg