here is the situation
i make a clip. set the first tween key (say frame 1)
add a tween key in a later frame.(frame 11 of the picture) move/rotate… the clip
all good
now I want my clip to go back to original state so I try to copy first key on the last frame (frame 18 of the picture)
the copy/paste things does not works every time. Sometimes yes sometimes not
and more
say I want to copy the entire tweening on another layer (another object with the same animation, same keys)
i select all the keys, copy and paste on the new layer
the software let me do it but there is no object on the stage
check attached image