Arthur,
The PSC type corporate-entity-with-significant-control exists only in our documentation - e.g. in reality corporate-entity-with-significant-control is already corporate-entity-person-with-significant-control.
Therefore if you are using corporate-entity-with-significant-control as a possible value, it can be removed without consequence.
We don’t have, and never should, have a PSC record stored with a kind of corporate-entity-with-significant-control.
The documentation fix should however go live in the next few weeks.
SDN