You likely have a goofy old render file playing… Sometimes just copying and pasting the clips from the errant sequence to a new one fixes this up. (old sequence is still referencing that old render file). if that fails, trash your renders using the render manager and see if it doesn’t clean this up…
Jerry
Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann
DVD:https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup
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