If I downgrade, what will happen to Task Boards with more than 5 collaborators?

If you are not the Task Board owner then you may find a board is archived if the owner of that board has not continued their Business subscription and the board is not within their free board allowance.

If the Task Board is not within the free boards allowance, then the boards will be archived and the owner and the first 5 collaborators will only be able to view the board in a read-only format.

Any additional collaborators exceeding 5 will find the Task Board automatically archived and will also be locked out of the board – they won’t have access to any of its tasks or data of any kind.