"Break Apart Clip Items" no longer works on synchronized clips within the timeline?

Sure, thanks! First screenshot shows the issue I'm having - ordinarily I would just highlight the synchronized clip within the timeline, go up to the "Clip" menu, and hit "Break Apart Clip Items." This function is no longer available for me. It's not just one clip, it's not just one project, and I've actually tried it on two separate computers. Across the board, "Break Apart Clip Items" is greyed out and no longer works like it used to.

For reference, the second screenshot shows a past project where I was able to use "Break Apart Clip Items" on a timeline full of synchronized clips. This is what I'm trying to achieve - I edited the whole project using synchronized clips, and then broke them apart, replacing the synchronized clips with the original video and audio files I'd synchronized together, with the timing of the edits remaining intact. I do my sound-mixing and color correction after breaking the synced clips apart.

My workflow was exactly the same for both projects, same camera, same video format, same audio format, same process of editing with synchronized clips. I just can't seem to break the clips apart anymore, since recent updates in the past couple weeks. Any ideas would be appreciated.

They're all "problem clips" now, unfortunately, this is a general problem with being unable to break apart synchronized clips as I always could in the past.

So if I double-click, it opens up the entire synchronized clip, i.e. the full length of video and audio synced together. If I make changes here, it makes changes to the synchronized clip itself, in all projects and all uses within this library. I suppose I could keyframe the specific parts used within the edit, but it'd be a pain to work this way.

In the past, "Break Apart Clip Items" would simply break apart the small section of the synchronized clip cut within the timeline, and allow me to edit the separate video and audio tracks used within the timeline, without affecting the synchronized clip as a whole. As seen in the second screenshot on my last post. It never involved double-clicking and making changes to the synchronized clip itself, except in cases where the automatic sync didn't work properly and I had to line the audio up manually.

Does that make sense? It's possible my workflow is unusual, but editing with synchronized clips and then using "Break Apart Clip Items" always worked great for my purposes in the past, and within the last two weeks, it suddenly no longer works.

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