SUMMARY Add the ability to import a kdenlive file in kdenlive as it is originally STEPS TO REPRODUCE 1. Import a kdenlive file in the project bin 2. Import the kdenlive file from the project bin to the time line OBSERVED RESULT The kdenlive file is imported as a single clip EXPECTED RESULT the user should be able to choose between importing as a single clip or importing as the original timeline This could enable to reuse sequences and make complex custom effects/transitions