The deleted emails were between 2021 and 2023, and it's reported that all documents and drafts of Spare were destroyed in these two years - seemingly before Spare was published in 2023.
The emails between Keeper of The Privy Purse & Treasurer to the King Sir Michael Stevens, and Chuck's Private Secretary Sir Clive Alderton logically involve money and KC directly, and rather than being "dragged in" they're in the thick of it imo.
The Newspaper's lawyers are also seeking a search of 36,000 messages between Harald and Palace staff. The judge has ordered Harald's lawyers to write to Alderton and Stevens asking them to disclose any correspondence with the Duke. They will get nothing.
What were Alderton, Stevens, Moehringer and Harald negotiating over Spare for two years, and for how much? Funny sort of grey-rocking, thousands of emails. I bet the Stoat was being paid to keep damaging topics out of Spare like Diana, Savile and Camilla, whether true or not, submitting drafts to the Palace for editing and rejection. Harald has said he has plenty more material, and this missing information could be it. The Ho will be involved here and likely have copies. The Sussexes could even have leaked this, and I don't see the connection with the earlier phone-hacking case.
I bet also the Stoat was paid to destroy the correspondence and drafts, and though copies will exist in the Palace no judge will get to them. The two devices mysteriously "found" will have been cleaned up, that's why they were "found".
"Harry's barrister David Sherborne confirmed the 'entire chat history was wiped' but said: 'This was a highly necessary process, not to hide anything but to delete highly sensitive information about [Harry] and the royal family which, if leaked, would not only compromise his security but also be potentially damaging to the [duke] and his family."
There we have it. Damaging information, but not about security imo.
Wikipedia
The Privy Purse is the British sovereign's private income, mostly from the Duchy of Lancaster. This amounted to £20.1 million in net income for the year to ...