OK guys!!! i am so happy that i finally did it 
I put the KIT RELOAD ON CHANGE on, but it didnt help.
The soulution was to, when i switch to another pattern (still using the kit from the previous one), to LOAD a NEW kit!!!
Before, I used the command CLEAR kit, to start fresh with new sounds on a new pattern,
and because the kit from the previous pattern was STILL ACTIVE, it deleted it from all patrterns.
So, there must be a new kit loaded on a new pattern, that becomes active for given pattern.
Finally got my head around it and there is no more excuses to do a live set.
Thank you people!