With regards to the process or an Almshouse who has received grant funding but who is a converting to a CIO, this is not uncommon
From a Homes England perspective the use of the grant to retain the homes as social housing does not change and therefore the grant should be able to be switched to the CIO
There is some guidance in the Homes England capital funding guide, but if uncertain please ask to speak to the Historical grants team at Homes England Grant_Notifications@homesengland.gov.uk
https://www.gov.uk/guidance/capital-funding-guide/7-grant-recovery
Homes England grant funding is only available to registered providers for any newbuild developments or the purchase of new homes that will add to the homes managed by the Charity. To become registered it currently takes 18 months even if you have only recently become de-registered.