diff --git a/src/murfey/client/multigrid_control.py b/src/murfey/client/multigrid_control.py
index c3b24a050..8d1a660b5 100644
--- a/src/murfey/client/multigrid_control.py
+++ b/src/murfey/client/multigrid_control.py
@@ -104,14 +104,18 @@ def __post_init__(self):
             register_client=False,
         )
 
+        # Calculate the time offset between the client and the server
+        current_time = datetime.now()
+        server_timestamp = requests.get(
+            f"{self.murfey_url}{url_path_for('session_control.router', 'get_current_timestamp')}"
+        ).json()["timestamp"]
+        self.server_time_offset = current_time - datetime.fromtimestamp(
+            server_timestamp
+        )
+
+        # Store the visit end time in the current device's equivalent time
         if self.visit_end_time:
-            current_time = datetime.now()
-            server_timestamp = requests.get(
-                f"{self.murfey_url}{url_path_for('session_control.router', 'get_current_timestamp')}"
-            ).json()["timestamp"]
-            self.visit_end_time += current_time - datetime.fromtimestamp(
-                server_timestamp
-            )
+            self.visit_end_time += self.server_time_offset
 
     def _multigrid_watcher_finalised(self):
         self.multigrid_watcher_active = False
@@ -153,9 +157,10 @@ def finalise(self):
             self._finalise_rsyncer(p)
 
     def update_visit_time(self, new_end_time: datetime):
-        self.visit_end_time = new_end_time
+        # Convert the received server timestamp into the local equivalent
+        self.visit_end_time = new_end_time + self.server_time_offset
         for rp in self.rsync_processes.values():
-            rp._end_time = new_end_time
+            rp._end_time = self.visit_end_time
 
     def _start_rsyncer_multigrid(
         self,
diff --git a/src/murfey/client/rsync.py b/src/murfey/client/rsync.py
index fa229f132..de97d96ee 100644
--- a/src/murfey/client/rsync.py
+++ b/src/murfey/client/rsync.py
@@ -220,7 +220,6 @@ def enqueue(self, file_path: Path):
             self.queue.put(absolute_path)
 
     def flush_skipped(self):
-        self._end_time = datetime.now()
         for f in self._skipped_files:
             self.queue.put(f)
         self._skipped_files = []
@@ -561,7 +560,9 @@ def parse_stderr(line: str):
             success = False
 
         if result is None:
-            logger.error(f"No rsync process ran for files: {files}")
+            # Only log this as an error if files were scheduled for transfer
+            if files:
+                logger.error(f"No rsync process ran for files: {files}")
         else:
             logger.log(
                 logging.WARNING if result.returncode else logging.DEBUG,
diff --git a/src/murfey/instrument_server/api.py b/src/murfey/instrument_server/api.py
index 3ba3a88e9..afd890255 100644
--- a/src/murfey/instrument_server/api.py
+++ b/src/murfey/instrument_server/api.py
@@ -212,6 +212,7 @@ def start_multigrid_watcher(session_id: MurfeySessionID, process: bool = True):
 @router.delete("/sessions/{session_id}/multigrid_watcher/{label}")
 def stop_multigrid_watcher(session_id: MurfeySessionID, label: str):
     watchers[label].request_stop()
+    return {"success": True}
 
 
 @router.post("/sessions/{session_id}/multigrid_controller/visit_end_time")
@@ -219,11 +220,11 @@ def update_multigrid_controller_visit_end_time(
     session_id: MurfeySessionID, end_time: datetime
 ):
     controllers[session_id].update_visit_time(end_time)
+    return {"success": True}
 
 
 class RsyncerSource(BaseModel):
     source: Path
-    label: str
 
 
 @router.post("/sessions/{session_id}/stop_rsyncer")
diff --git a/src/murfey/server/api/instrument.py b/src/murfey/server/api/instrument.py
index 970f963c5..e4acae82c 100644
--- a/src/murfey/server/api/instrument.py
+++ b/src/murfey/server/api/instrument.py
@@ -3,9 +3,9 @@
 import asyncio
 import datetime
 import logging
-import urllib
 from pathlib import Path
 from typing import Annotated, List, Optional
+from urllib.parse import quote
 
 import aiohttp
 from fastapi import APIRouter, Depends
@@ -340,7 +340,6 @@ async def stop_rsyncer(
             async with clientsession.post(
                 f"{machine_config.instrument_server_url}{url_path_for('api.router', 'stop_rsyncer', session_id=session_id)}",
                 json={
-                    "label": session_id,
                     "source": str(secure_path(Path(rsyncer_source.source))),
                 },
                 headers={
@@ -367,7 +366,6 @@ async def finalise_rsyncer(
             async with clientsession.post(
                 f"{machine_config.instrument_server_url}{url_path_for('api.router', 'finalise_rsyncer', session_id=session_id)}",
                 json={
-                    "label": session_id,
                     "source": str(secure_path(Path(rsyncer_source.source))),
                 },
                 headers={
@@ -420,7 +418,7 @@ async def update_visit_end_time(
     if machine_config.instrument_server_url:
         async with aiohttp.ClientSession() as clientsession:
             async with clientsession.post(
-                f"{machine_config.instrument_server_url}{url_path_for('api.router', 'update_multigrid_controller_visit_end_time', session_id=session_id)}?end_time={urllib.parse.quote(end_time.isoformat())}",
+                f"{machine_config.instrument_server_url}{url_path_for('api.router', 'update_multigrid_controller_visit_end_time', session_id=session_id)}?end_time={quote(end_time.isoformat())}",
                 headers={
                     "Authorization": f"Bearer {instrument_server_tokens[session_id]['access_token']}"
                 },
@@ -467,7 +465,6 @@ async def remove_rsyncer(
                 async with clientsession.post(
                     f"{machine_config.instrument_server_url}{url_path_for('api.router', 'remove_rsyncer', session_id=session_id)}",
                     json={
-                        "label": session_id,
                         "source": str(secure_path(Path(rsyncer_source.source))),
                     },
                     headers={
@@ -495,7 +492,6 @@ async def restart_rsyncer(
                 async with clientsession.post(
                     f"{machine_config.instrument_server_url}{url_path_for('api.router', 'restart_rsyncer', session_id=session_id)}",
                     json={
-                        "label": session_id,
                         "source": str(secure_path(Path(rsyncer_source.source))),
                     },
                     headers={
@@ -510,20 +506,44 @@ async def restart_rsyncer(
 async def flush_skipped_rsyncer(
     session_id: MurfeySessionID, rsyncer_source: RsyncerSource, db=murfey_db
 ):
-    data = {}
-    instrument_name = (
-        db.exec(select(Session).where(Session.id == session_id)).one().instrument_name
-    )
+    # Load data for session
+    session_entry = db.exec(select(Session).where(Session.id == session_id)).one()
+    instrument_name = session_entry.instrument_name
+
+    # Define a new visit end time that's slightly ahead of current time
+    new_end_time = datetime.datetime.now().replace(
+        second=0, microsecond=0
+    ) + datetime.timedelta(minutes=5)
+    # Update the stored visit end time if the new one exceeds it
+    if session_entry.visit_end_time:
+        if new_end_time > session_entry.visit_end_time:
+            session_entry.visit_end_time = new_end_time
+            db.add(session_entry)
+            db.commit()
+
+    # Send request to flush rsyncer
+    data: dict = {}
+    update_result: dict = {}
     machine_config = get_machine_config(instrument_name=instrument_name)[
         instrument_name
     ]
     if isinstance(session_id, int):
         if machine_config.instrument_server_url:
             async with aiohttp.ClientSession() as clientsession:
+                # Send request to instrument server to update multigrid controller
+                async with clientsession.post(
+                    f"{machine_config.instrument_server_url}{url_path_for('api.router', 'update_multigrid_controller_visit_end_time', session_id=session_id)}?end_time={quote(session_entry.visit_end_time.isoformat())}",
+                    headers={
+                        "Authorization": f"Bearer {instrument_server_tokens[session_id]['access_token']}"
+                    },
+                ) as resp:
+                    update_result = await resp.json()
+                if not update_result.get("success", False):
+                    return {"success": False}
+                # Send request to flush the rsyncer
                 async with clientsession.post(
                     f"{machine_config.instrument_server_url}{url_path_for('api.router', 'flush_skipped_rsyncer', session_id=session_id)}",
                     json={
-                        "label": session_id,
                         "source": str(secure_path(Path(rsyncer_source.source))),
                     },
                     headers={