How to handle an in specie dividend of stock?

I am migrating some old records across to Sharesight and have a few where shares in a new company have been issued by a parent company. These are labelled as “a Distribution in Specie” on CHESS.

I was wondering if there was any advice on how to manage these - do they affect the cost base of the parent at all? Or are they just deemed as 0 cost base.

If it helps, the one in particular I am looking at is Cazaly Resources and their distribution of Newera Uranium