I thought about making everything a compound clip but that gets unwieldy. I have a lot of files, and a lot of layers, and I find compound clips also make headaches when we go to export audio to post, so I try to minimize our use. I wondered if there was something I could do with the proxy workflow treating the placeholder clip as a proxy, but final cut seems to only want to work with its own proxies.
So far, the best way I have found to do this:
1. Lift the placeholder clip from the base storyline if it isn’t already.
2. Place the playhead at the beginning of the placeholder clip (to keep track of the in-point).
3. Drag out the in-point of the placeholder so it starts at beginning of the clip
4. Place the master clip in a layer on top of the placeholder.
5. Copy the placeholder clip from the timeline.
6. Paste the attributes from the placeholder onto the master.
7. Drag the in-point of the master back to the playhead (see step 2)
8. Drag the out-point of the master to match the outpoint of the placeholder.
9. Copy and paste any transitions from the placeholder to the master.
10. Delete the placeholder
11. Drop the master back into the base storyline if necessary.
It works, but it is a lot of steps for something I feel should just be a keystroke for swapping the files. We made the switch to Final Cut from Premiere about six months ago, and I really appreciate its speed and stability. It handles and plays back our crazy many layered projects with ease. I have washed my hands of Premiere. There are a few weird oversights though that seem to require complicated workarounds for what should be simple tasks.