In switching Pi Server users over to the KMS overlay (as resolution to LP: #2038924) we need an additional quirk for upgraders to migrate config.txt (this will be similar, but not identical, to the one for LP: #1923673).
In switching Pi Server users over to the KMS overlay (as resolution to LP: #2038924) we need an additional quirk for upgraders to migrate config.txt (this will be similar, but not identical, to the one for LP: #1923673).