Some companies dissolved after 2010-01-01 have not been restored to API

We have found 5600 companies dissolved on or after 2010-01-01 that are in the older URI interface and have not been restored to the API. Of these, 5280 were dissolved on 2010-01-05 and 240 were dissolved on 2014-04-22, with the rest on various dates from 2010-01-03 to 2017-10-18.
This is the oldest English company dissolved on 2010-01-05:
http://data.companieshouse.gov.uk/doc/company/00138301.html
This is the oldest English company dissolved on 2014-04-22:
http://data.companieshouse.gov.uk/doc/company/00922265.html
Why are they not back in the API?