Child traveling with Ancestral Dependent visa after parents got ILR

Hello,
I am trying to get an answer to the following:
I have a child who is born in the UK and currently has an Ancestral Dependant visa expiring in 2 years.
Both parents have just applied to ILR and are planning to travel once ILR has been granted.

What we are trying to find out is what status will my child have once we get ILR.
The ancestral dependent visa expiry date is in 2 years but the parent that got Ancestral Visa will have ILR by then.

I know that we can register my child for citizenship as soon as we get ILR which we intend to do but need to know whether the Ancestral Dependant visa is sufficient to travel and if we need to apply for an intermediate visa while waiting for the citizenship application to be processed.

Thanks

The child's visa remains valid. Free to travel.