I already used "Reload Clip" but this does not change the clip in the timeline.

From my point of view it would be helpful when on start of kdenlive or on "Reload Clip" the clips in the timeline are shorten or marked when the real clip is shorter as the clip in the timeline.
I know now that the actual operating is a fact in the tool and so I must adapt my way of working.

Thanks at all for reading and giving comments.
Werner