Fsbuild-2 Flight Planner

When I build a flight plan I receive a window that indicates the destination directories for the exports. If I click "OK" the export occurs. However, sometimes I would like to edit the altitudes in the grid. I have not ben able to find a way to do the edit without closing the export window. If I do close the export window and edit the grid I cannot find a way to manually trigger the export that includes the newly edited values. Am I missing something?

Thank you for the response. I did as you suggested but the plan just returns to what was there before I edited the altitudes. When the window came up to tell me where the exports would go I closed the window so that I could do the edits. The I clicked on the Build from Table/Grid option and clicked on Build.