Via https://musicbrainz.org/edit/76021570

Problem:
When adding a new release seeded with disc ID based on an existing one but the tracks are not similar enough they are unlinked and the user is forced to either create new recordings or select existing ones.

In that case the standard dialog is shown:

Note: All tracks require an associated recording. Click “Edit” to select a recording for each track. Choose “Add a new recording” if an appropriate one doesn’t exist yet.

Here the warning isn't clear why exactly the user has to choose recordings while others are already linked.
An unsuspecting user might not notice the discrepancy of lengths and simply reuses the existing recordings.

Proposed solution:
Tell the user recordings have been unlinked because lengths of the release they were basing their addition on were off. They should either do a more thorough research or create new recordings if in doubt.

Steps to reproduce:

1. Use this TOC and add a new release
2. Fill the artist and release group field
3. The release duplicates tab should activate, select any release where the track indexing is bad, e.g. https://musicbrainz.org/release/198f1c17-f002-4921-b974-f0969bfc3b32
4. Go to the recordings tab (which should be highlighted due to errors)