The Package originator can control what happens to Form Fields inside a fillable PDF document once it has been signed in Syngrafii.
When creating and customizing a Package, click on the Advanced tab in the Package Options.
Under Advanced, there is a drop-down to select the method of flattening for the document. By default, Flatten All is selected.
Other available options are Flatten None and Flatten Filled.
You can set the option you want for all your future Packages by updating the
Signing Defaults values: Set Your Signing Defaults
Flatten All - flattens all the form fields after signing and no active forms will be in the document once it has been finalized.
Flatten None - does not flatten any of the form fields after signing and all of them are left active even after the document has been finalized.
Flatten Filled - this option only flattens the form fields that are completed by a signer; the remaining ones will be left active.