Fix nan2, isVis, and other errors

reproschema/tests/test_rs2redcap_redcap2rs.py

@@ -259,15 +259,13 @@ def compare_protocols(prot_tree_orig, prot_tree_final):
                                 )
 
                     elif key == "isVis":
-                        # Original isVis handling
-                        if orig_value is not None:
-                            if normalize_condition(
-                                orig_value
-                            ) != normalize_condition(final_value):
+                        if orig_value is True:
+                            # If original is True and final is None/missing, don't count as error
+                            pass
+                        elif orig_value is not None:
+                            if normalize_condition(orig_value) != normalize_condition(final_value):
                                 error = True
-                        elif (
-                            final_value is not None and final_value is not True
-                        ):
+                        elif final_value is not None and final_value is not True:
                             error = True
 
                     if error: