I have a one-to-many form with a grid representing the many side of the relationship. When I attempt (at run-time) to change the values in the EditBox controls on any line in the grid, everything works fine until I tab to the next column, when the value I've entered disppears from the grid and is never posted to the table.
All read-only attributes for table, grid and EditBox are set to .F.

Any ideas?