1 files changed, 4 insertions, 1 deletions
diff --git a/src/client/Network.ts b/src/client/Network.ts
index 631ec9122..e9f93fad3 100644
--- a/src/client/Network.ts
+++ b/src/client/Network.ts
@@ -58,11 +58,14 @@ export namespace Networking {
                     ])
                 );
             }
+            formData.set('fileguids', fileguidpairs.map(pair => pair.guid).join(';'));
             // If the fileguidpair has a guid to use (From the overwriteDoc) use that guid. Otherwise, generate a new guid.
             fileguidpairs.forEach(fileguidpair => formData.append(fileguidpair.guid ?? Utils.GenerateGuid(), fileguidpair.file));
         } else {
             // Handle the case where fileguidpairs is a single file.
-            formData.append(fileguidpairs.guid ?? Utils.GenerateGuid(), fileguidpairs.file);
+            const guids = fileguidpairs.guid ?? Utils.GenerateGuid();
+            formData.set('fileguids', guids);
+            formData.append(guids, fileguidpairs.file);
         }
         const parameters = {
             method: 'POST',