To clear any Excel formatting associated with a form opened as a form, select Clear from the Formatting group in the provider ribbon; for example, the Planning ribbon.

Selecting the Clear option removes any custom Excel formatting associated with the form. Note that you can still work with any design-time formatting that may be defined for the form, including Groovy rules, data validation rules, and format-only rules, along with cell styles functionality since cell styles are not dependent on any custom Excel formatting that is saved.