I accept that merging of threads is sometimes necessary. However, I just discovered that the topic into which the thread containing my posting was merged, shows no sign of my participation.
I repeat: my post is in the new thread, but the sign in front of the topic tells me, that there is nothing in it that comes from me.
I guess that merging does NOT merge all information. Something is lost and it seems to be that this marker is one part of it.
I don’t know if there is more than that, that gets lost while merging threads.