diff --git a/src/cli/cpl/cli/model/cpl_structure_model.py b/src/cli/cpl/cli/model/cpl_structure_model.py
index 3d9434c1..79566412 100644
--- a/src/cli/cpl/cli/model/cpl_structure_model.py
+++ b/src/cli/cpl/cli/model/cpl_structure_model.py
@@ -11,9 +11,13 @@ T = TypeVar("T", bound="CPLStructureModel")
 
 
 class CPLStructureModel:
-    def __init__(self, path: Optional[str] = None):
+    def __init__(self, path: Optional[str] = None, ignore_fields: Optional[List[str]] = None):
         self._path = path
 
+        self._ignore = {"_ignore", "_path"}
+        if ignore_fields is not None:
+            self._ignore.update(ignore_fields)
+
     @property
     def path(self) -> Optional[str]:
         return self._path
@@ -68,7 +72,7 @@ class CPLStructureModel:
     def to_json(self) -> Dict[str, Any]:
         result: Dict[str, Any] = {}
         for key, value in self.__dict__.items():
-            if not key.startswith("_") or key == "_path":
+            if not key.startswith("_") or key in self._ignore:
                 continue
             out_key = _self_or_cls_snake_to_camel(key[1:])
 
diff --git a/src/cli/cpl/cli/model/workspace.py b/src/cli/cpl/cli/model/workspace.py
index b991190c..c063e068 100644
--- a/src/cli/cpl/cli/model/workspace.py
+++ b/src/cli/cpl/cli/model/workspace.py
@@ -24,7 +24,7 @@ class Workspace(CPLStructureModel):
         default_project: Optional[str],
         scripts: Dict[str, str],
     ):
-        CPLStructureModel.__init__(self, path)
+        CPLStructureModel.__init__(self, path, ["_actual_projects", "_project_names"])
 
         self._name = name
         self._projects = projects