for Figma-to-AE workflows, you might not know it has a built-in "un-precomp" button that works like magic for standard layers too. 4. No Plugin? The Manual "Copy-Paste" Method

Searching for yields mixed results. Here is the current landscape:

In your main composition, select the precomp layer you want to un-precompose.

Use a project dashboard composition. Never precompose without a reason. And when you need to reverse it, let the script do the heavy lifting.