I'm working on a board (9454) where I'm looking to change a number of "view only" borders to "default. " While in Edit mode I can select the border and change the Border Type to "default," but when I click Apply I get the following warning..

Clicking OK and even Save doesn't let the change go through. Deleting the border and then adding a new one might work, but I'm also unable to delete a border "by Territory." The designer won't let me choose the second territory. The only way to delete a border is to do it by border, which doesn't work for me because the borders are too close and as a result some are impossible to select.

Update: I'm able to Delete then Add, so there is a workaround - but it is time-consuming.