diff --git a/SharepointToolbox/Services/FileTransferService.cs b/SharepointToolbox/Services/FileTransferService.cs
index 221f2bb..e177bbd 100644
--- a/SharepointToolbox/Services/FileTransferService.cs
+++ b/SharepointToolbox/Services/FileTransferService.cs
@@ -246,9 +246,6 @@ public class FileTransferService : IFileTransferService
         var streamResult = srcFile.OpenBinaryStream();
         await ExecuteQueryRetryHelper.ExecuteQueryRetryAsync(sourceCtx, progress, ct);
 
-        if (streamResult.Value == null)
-            throw new InvalidOperationException($"Could not open binary stream for: {srcFileUrl}");
-
         using var buffer = new MemoryStream();
         await streamResult.Value.CopyToAsync(buffer, 81920, ct);
         buffer.Position = 0;
@@ -257,8 +254,6 @@ public class FileTransferService : IFileTransferService
         // streams the payload in one request and does not touch list-view
         // metadata, so it bypasses LVT.
         var slash = effectiveDestUrl.LastIndexOf('/');
-        if (slash < 0)
-            throw new InvalidOperationException($"Invalid destination URL (no slash): {effectiveDestUrl}");
         var destFolderUrl = effectiveDestUrl.Substring(0, slash);
         var destFileName = effectiveDestUrl.Substring(slash + 1);
 
@@ -278,19 +273,7 @@ public class FileTransferService : IFileTransferService
             // successful upload to honour Move semantics.
             var srcDelete = sourceCtx.Web.GetFileByServerRelativeUrl(srcFileUrl);
             srcDelete.DeleteObject();
-            try
-            {
-                await ExecuteQueryRetryHelper.ExecuteQueryRetryAsync(sourceCtx, progress, ct);
-            }
-            catch (OperationCanceledException) { throw; }
-            catch (Exception ex)
-            {
-                Log.Error(ex,
-                    "Move: source delete failed for {Src} after successful upload to {Dst}. " +
-                    "File is duplicated — manually delete the source.",
-                    srcFileUrl, effectiveDestUrl);
-                throw;
-            }
+            await ExecuteQueryRetryHelper.ExecuteQueryRetryAsync(sourceCtx, progress, ct);
         }
     }
 
@@ -347,10 +330,8 @@ public class FileTransferService : IFileTransferService
             await ExecuteQueryRetryHelper.ExecuteQueryRetryAsync(ctx, progress, ct);
             return file.Exists;
         }
-        catch (OperationCanceledException) { throw; }
-        catch (Exception ex)
+        catch
         {
-            Log.Debug("File existence check failed for {Url}: {Error}", fileServerRelativeUrl, ex.Message);
             return false;
         }
     }
@@ -457,7 +438,6 @@ public class FileTransferService : IFileTransferService
             await ExecuteQueryRetryHelper.ExecuteQueryRetryAsync(ctx, progress, ct);
             return list.ItemCount;
         }
-        catch (OperationCanceledException) { throw; }
         catch (Exception ex)
         {
             // Non-fatal: pre-flight count is purely informational. Treat as