I have a small app that has three related tables. I had created 5 pages and on one of them was < Detailed Activity > in a grid. I have a button to go to the detailed screen to modify/add to the activity. I modified the structure of the database and now the grid shows no data. I changed one of the linking fields to a primary key with one to many. Why did this cause the grid to show no data at all?? I tried removing and re-adding my environment on the form.