It's often possible to convert a UI policy to a data policy, and vice versa. On the UI policy form, you'll find a UI action called Convert this to Data Policy.
This UI action to convert a UI policy to a data policy will only show up if the following criteria are met:
The Run scripts tick-box on the Advanced view of the UI policy form must not be checked. This is because data policies do not support scripting, so there is no way to convert a scripted UI policy into a data policy.
The Global tick-box must be checked.
Any UI policy actions associated with the UI policy must not affect the visibility of a field (all Actions must have the Visible field set to Leave alone). This is because there is no way to modify the visibility of a field using a data policy.
If the preceding conditions are met, you'll see the Convert this to Data Policy UI Action under the Related Links section of the form:
Clicking this link will automatically generate a new data policy and...