hi,
1. click or box select all the keys you want to delete, and delete with x, like you delete anywhere else.
2. then click on the remaining key frame and use gx to move it where you want
3. I haven’t done this animation so, if there is other animation on the remaining key frame that you want to delete (ie lid), then use the drop down on the left side of the timeline and you can delete the animation on just those parts.
Don’t know how clear this is, but hope it helped.
