^Some of the reports have a default end date of "today's date", but others have a default end date of 31/12/19. The latest update changes this second end date to 31/12/2099. If you haven't gotten this update automatically, you might need to manually download it from My Sage.

I dont use blogs much and im a little confused .... am i reading this correctly.  The date of the report end has always been 'todays date', but since end December 2019 this is no longer the case, and you have to now change the date to the date required (todays date) or upgrade your software????  Surely this cannot be the case!!  I have a contract where upgrades are automatic anyway, so why is no upgrade being offered

None of these suggestions, even if implemented, would be applied to previous versions of Sage. They'd all be included in the latest version, so you'd always need to upgrade to that version to actually get what you request.

Should be an easy patch Sage could roll out to all versions in use. Their stock answer is upgrade to v26.