To appear in a report, a field must be included in that report’s layout. When you change an existing filed’s data type, you can cause it to be removed from all report layouts in which it was included. To get the newly defined, or redefined, field to display in a report:

Steps:

1. From the Report menu, choose Setup.
2. In the Layout panel, add the field in question to the report layout.
3. The field will now appear in that report. You will have to repeat this process for every report in which you would like this field to appear.