Export a changed Bundle from Textmate 2

How do I export a Bundle with changes (delta) from Textmate 2?

I have installed the Bundle manually and it appears in the ~/Library/Application Support/Avian/Pristine Copy/Bundles directory.

But I've made edits with the bundle editor so there are also "delta" files in ~/Library/Application Support/Avian/Bundles

Is there a way to merge these or export a combined version besides manually editing as XML?