herolulu Hmm, that's weird. As far as I have tested, I have been able to match the rotation values of the first and last keys by copying and pasting the keys:
So I am not sure what the actual cause of the problem is. However, I noticed that while the offset button is enabled, even if you select the white key in the overview row, you cannot select the keys in all the timelines of the same frame, so I thought that might be the reason why you thought you had selected all the keys, but actually hadn't:
In the video above, you can see that when the offset button is disabled, selecting the white key in the overview row selects keys in all rows, but when it is enabled, only the key of the top bone is selected. This has always been the case, so it's not a bug, it's design, but I thought it might cause confusion when trying to copy keys.
Could you please try again to see if you can copy and paste the keys correctly?
