You need to make a merge proposal into https://code.launchpad.net/~ubuntu-core-dev/ubuntu-seeds/ubuntu-touch.utopic first. After that, the files in ubuntu-touch-meta are automatically maintained and not normally handled by way of merge proposals; there's a script that core developers can use to refresh the package against the seeds.
You need to make a merge proposal into https:/ /code.launchpad .net/~ubuntu- core-dev/ ubuntu- seeds/ubuntu- touch.utopic first. After that, the files in ubuntu-touch-meta are automatically maintained and not normally handled by way of merge proposals; there's a script that core developers can use to refresh the package against the seeds.