I voted ‘no’ on this edit, but now I’m wondering if my assumption is correct.
The way the edit is displayed, it looks like the assumption is that track 1 on the merging release is the same as track 1 on the target, and using the “Merge mediums and recordings” strategy will result in the target release still having only 9 tracks, and the tracks being merged will be lost. If the tracks don’t have the same title, is that what’s going to happen? Or will it simply add the 9 tracks to the target medium? Being a digital release, that might be what the editor thinks is going to happen.