Looks like there is no flexibility for Harthill Royal as they are unambiguosly in West Lothian where the ground is concerned and there are no caveats inserted on the county boundary. Think it's really Kello Rovers that are being covered by the no effect on existing members wording even though it is not these county boundaries that would affect them, just to get the idea of being grandfathered in established if a similar agreement is made with the SoS in future.
Think the word was that Whitburn already had to hedge their bets?