diff --git a/app_state.py b/app_state.py
index 945c528..2f9aa77 100644
--- a/app_state.py
+++ b/app_state.py
@@ -8,7 +8,7 @@ so later rebinding would only ever be seen by the module that did it.
 import configparser
 import os
 
-VERSION = "0.0.0.085"
+VERSION = "0.0.0.086"
 PROPERTIES_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "editor.properties")
 DEFAULT_GRID_SIZE = 10
 DEFAULT_ADD_TIMESTAMP = True
diff --git a/device_session.py b/device_session.py
index 47db2f9..ff218dc 100644
--- a/device_session.py
+++ b/device_session.py
@@ -237,7 +237,15 @@ class DeviceSession:
 
         app_elem = ET.SubElement(sax_root, "app")
         if root_comp is not None:
-            self._build_comp_element(app_elem, root_comp)
+            # Build children of root directly under <app>, matching .sax format
+            # where <app> IS the root container (not a <comp>)
+            for child_id in root_comp.children:
+                child_comp = self.sox_client.cache_get(child_id)
+                if child_comp is not None:
+                    self._build_comp_element(app_elem, child_comp)
+                else:
+                    ET.SubElement(app_elem, "comp",
+                                  name="...", id=str(child_id), type="")
 
         return sax_root
 
@@ -259,8 +267,12 @@ class DeviceSession:
                 name = slot["name"]
                 if name in sox_comp.values:
                     val = sox_comp.values[name]
+                    if isinstance(val, float):
+                        val_str = f"{val:.4f}".rstrip("0").rstrip(".")
+                    else:
+                        val_str = str(val)
                     ET.SubElement(comp_elem, "prop",
-                                  name=name, val=str(val))
+                                  name=name, val=val_str)
 
         for child_id in sox_comp.children:
             child_comp = self.sox_client.cache_get(child_id)
@@ -330,7 +342,7 @@ class DeviceSession:
         if not parts:
             return None
         parts.reverse()
-        return "/".join(parts)
+        return "/" + "/".join(parts)
 
     # ── Update DOM from COV ─────────────────────────────────────