Preparations

1. login to Admin Console
2. go to Custom → Widgets section
3. add some records

Part 1 (date field change)

1. login to Admin Console
2. go to Custom → Widgets section
3. use Export button on toolbar to export all grid data
4. confirm, that CSV file was sent back to user and it contains all data shown in grid
5. open downloaded CSV file
6. change values in all columns but ID and Image into another valid values
7. use Import button in grid to import back changed file
8. confirm, that all changes made in CSV file as shown in grid

Part 2 (date and time field change)

1. go to IDE
2. open /modules/custom/units/widgets/widgets_config.php file for editing
3. in the CreatedOn field declaration comment out lines that change format and input_format field options
4. login to Admin Console
5. go to Custom → Widgets section
6. use Export button on toolbar to export all grid data
7. confirm, that CSV file was sent back to user and it contains all data shown in grid
8. open downloaded CSV file
9. change values in all columns but ID and Image into another valid values
10. use Import button in grid to import back changed file
11. confirm, that all changes made in CSV file as shown in grid

Part 3 (grid format override)

1. go to IDE
2. open /modules/custom/units/widgets/widgets_config.php file for editing
3. in the CreatedOn field declaration comment out lines that change format and input_format field options
4. in the CreatedOn column declaration in grid add format option with Y-m-d H:i:s value
5. login to Admin Console
6. go to Custom → Widgets section
7. confirm, that date in CreatedOn column is displayed using format specified before
8. use Export button on toolbar to export all grid data
9. confirm, that CSV file was sent back to user and it contains all data shown in grid + value for CreatedOn column is formatted the same as in grid
10. open downloaded CSV file
11. change values in all columns but ID and Image into another valid values
12. use Import button in grid to import back changed file
13. confirm, that all changes made in CSV file as shown in grid