[kdenlive] Copying Kdenlive projects and Preview Rendering

[Harald Albrecht]

Hi,

just want to ask here before filing a bug report: just started work on 
two new Kdenlive projects. For convenience, I cloned the first project 
in an early stage to be used as the starting point for the second 
project. And then I noticed something concerning preview rendering...

1. While working on the first project, I preview rendered the first few 
seconds consisting of the titling for this episode #23. So far, so good.

2. Then worked on the second project and replaced the title for this 
separate episode #24. Now, the fun starts: when preview rendering the 
same zone for the titling, Kdenlive happily picked up the preview 
rendering from episode #23, which I can clearly see as preview now uses 
the wrong titling.

So, this brings me to my question: does the document identity correctly 
change when I copy a project?

Best regards,
Harald

PS: As always, doing actual projects on the bleeding edge...