diff --git a/meshroom/core/graph.py b/meshroom/core/graph.py
index 4ad528fd..235239f9 100644
--- a/meshroom/core/graph.py
+++ b/meshroom/core/graph.py
@@ -1366,6 +1366,11 @@ class Graph(BaseObject):
         for node in self.nodes:
             node.clearSubmittedChunks()
 
+    def clearLocallySubmittedNodes(self):
+        """ Reset the status of already locally submitted nodes to Status.NONE """
+        for node in self.nodes:
+            node.clearLocallySubmittedChunks()
+
     def iterChunksByStatus(self, status):
         """ Iterate over NodeChunks with the given status """
         for node in self.nodes:
diff --git a/meshroom/core/node.py b/meshroom/core/node.py
index 29df5be3..dd992e04 100644
--- a/meshroom/core/node.py
+++ b/meshroom/core/node.py
@@ -433,7 +433,8 @@ class NodeChunk(BaseObject):
         self.node.nodeDesc.stopProcess(self)
 
     def isExtern(self):
-        return self._status.execMode == ExecMode.EXTERN
+        return self._status.execMode == ExecMode.EXTERN or (
+            self._status.execMode == ExecMode.LOCAL and self._status.sessionUid != meshroom.core.sessionUid)
 
     statusChanged = Signal()
     status = Property(Variant, lambda self: self._status, notify=statusChanged)
@@ -779,6 +780,12 @@ class BaseNode(BaseObject):
             if chunk.isAlreadySubmitted():
                 chunk.upgradeStatusTo(Status.NONE, ExecMode.NONE)
 
+    def clearLocallySubmittedChunks(self):
+        """ Reset all locally submitted chunks to Status.NONE. """
+        for chunk in self._chunks:
+            if chunk.isAlreadySubmitted() and not chunk.isExtern():
+                chunk.upgradeStatusTo(Status.NONE, ExecMode.NONE)
+
     def upgradeStatusTo(self, newStatus):
         """
         Upgrade node to the given status and save it on disk.
diff --git a/meshroom/ui/graph.py b/meshroom/ui/graph.py
index 7ace78d0..e7c6ae77 100644
--- a/meshroom/ui/graph.py
+++ b/meshroom/ui/graph.py
@@ -11,6 +11,7 @@ from multiprocessing.pool import ThreadPool
 from PySide2.QtCore import Slot, QJsonValue, QObject, QUrl, Property, Signal, QPoint
 
 from meshroom import multiview
+from meshroom.core import sessionUid
 from meshroom.common.qt import QObjectListModel
 from meshroom.core.attribute import Attribute, ListAttribute
 from meshroom.core.graph import Graph, Edge
@@ -283,6 +284,9 @@ class UIGraph(QObject):
         """ Set the internal graph. """
         if self._graph:
             self.stopExecution()
+            # Clear all the locally submitted nodes at once before the graph gets changed, as it won't receive further updates
+            if self._computingLocally:
+                self._graph.clearLocallySubmittedNodes()
             self.clear()
         oldGraph = self._graph
         self._graph = g
@@ -457,7 +461,11 @@ class UIGraph(QObject):
 
     def updateGraphComputingStatus(self):
         # update graph computing status
-        computingLocally = any([ch.status.execMode == ExecMode.LOCAL and ch.status.status in (Status.RUNNING, Status.SUBMITTED) for ch in self._sortedDFSChunks])
+        computingLocally = any([
+                                (ch.status.execMode == ExecMode.LOCAL and
+                                ch.status.sessionUid == sessionUid and
+                                ch.status.status in (Status.RUNNING, Status.SUBMITTED))
+                                    for ch in self._sortedDFSChunks])
         submitted = any([ch.status.status == Status.SUBMITTED for ch in self._sortedDFSChunks])
         if self._computingLocally != computingLocally or self._submitted != submitted:
             self._computingLocally = computingLocally