thank you very much @Peoplemuver! this helped me a lot! so it is indeed like someone mentioned it in this thread already. he posted a link to the akai forums and over there people said the same. now you confirmed that it really is the case. thank you for that mate !!!!
one last question in this regard: can you overwrite automation of an existing parameter without overwriting automation of other parameters on the same track? as far as i understood it the automation can either be off, can be in read mode or it can be in write mode. lets assume you automated the filter cutoff from a pad. you like the automation so you turn overdub off. now you move on to an effect on this track and automate something else. you also like that but you notice you could change something on the filter cutoff now - so that it fits even better. when you now go to write mode in the automation and change only that filter cutoff - is the automation on the effect (or whatever you might have automated in addition to that), yeah is that automation overwritten too? or does it only overwrite the filter cutoff and leaves the other parameters on the track alone?
if that would work, it would be kind of a workaround i could live with for the moment