I know this is probably user error, but I can't see what I'm doing wrong. So lets put up lots of photos and words and hopefully I can figure this out with some kind help from strangers (Got plenty of that already Googling and finding links to these forums).

The part of the video that isn't working for me involves two video clips of talking heads and a static background image. I'm using pan and zoom to have Head1 (Gareth - Me) in the top left corner filling 1/4 of the screen and Head2 (Morgan - Guest) similarly in the bottom right. After a few minutes the heads shrink down to 1/2 that size again and pan to the bottom left and bottom right respectively.

Problem is Head1 never starts in the top right, it's like it's first two key frames are ignored.

Overview: http://pasteboard.co/f7gMfN7Ms.png
Gareth Keyframe 1 (ignored): http://pasteboard.co/f7hLq8W4P.png
Gareth Keyframe 2 (ignored): http://pasteboard.co/f7ilV0Xyt.png
Gareth Keyframe 3 (the one that overwrites the first two): http://pasteboard.co/f7jcPU8kN.png
I'm presuming the later key frames shouldn't matter (essentially I do the reverse to end the video with the larger talking heads).

Anything else I should be posting up to help?

KDenLive V15.12.3
Ubuntu 16.04

I'm not sure I understand the problem. Looks like there might be 'invisible' or 'after-end-of-clip' keyframes.

First, saving and restarting is a good idea.

Then, go to the last keyframe, where everything is ok, then go one frame to the right, then add a keyframe and make sure the values as you want them to be.
Then move the new keyframe to the end of the keyframe-timeline, so it stays like this forever and only starts reacting to the 'after-end-of-clip' keyframe at the end of the keyframe-timeline.

Interactions between effects might cause problems, perhaps removing the crop would help.

If nothing seems to help and you don't want to recreate the project, make a copy and edit the kdenlive file (it's an xml) in a text editor, trying to figure out which keyframes you want and which 'hidden' one you want deleted.

Thank you for replying. The 'fix' I used was recreating the animation manually. Writing down the details of each key frame, delete the effect and create from scratch. That worked