Hey,
I have 26 visible grids in my project. When I select all the instance in the project, I have 50 grids.
I couldn't find the extra 24 grids anywhere, although the were selected (I unselected manually all the visible grids).
The weird thing is that in a grid schedule I see only the visible 26 grids. There are no loaded models.
I tried to unpin and delete the extra 24 hidden grids but nothing happened.
Any ideas?