diff --git a/openpype/hosts/maya/api/lib_renderproducts.py b/openpype/hosts/maya/api/lib_renderproducts.py
index 0eecedd231..60090e9f6d 100644
--- a/openpype/hosts/maya/api/lib_renderproducts.py
+++ b/openpype/hosts/maya/api/lib_renderproducts.py
@@ -797,6 +797,11 @@ class RenderProductsVray(ARenderProducts):
         if default_ext in {"exr (multichannel)", "exr (deep)"}:
             default_ext = "exr"
 
+        # Define multipart.
+        multipart = False
+        if image_format_str == "exr (multichannel)":
+            multipart = True
+
         products = []
 
         # add beauty as default when not disabled
@@ -804,23 +809,28 @@ class RenderProductsVray(ARenderProducts):
         if not dont_save_rgb:
             for camera in cameras:
                 products.append(
-                    RenderProduct(productName="",
-                                  ext=default_ext,
-                                  camera=camera))
+                    RenderProduct(
+                        productName="",
+                        ext=default_ext,
+                        camera=camera,
+                        multipart=multipart
+                    )
+                )
 
         # separate alpha file
         separate_alpha = self._get_attr("vraySettings.separateAlpha")
         if separate_alpha:
             for camera in cameras:
                 products.append(
-                    RenderProduct(productName="Alpha",
-                                  ext=default_ext,
-                                  camera=camera)
+                    RenderProduct(
+                        productName="Alpha",
+                        ext=default_ext,
+                        camera=camera,
+                        multipart=multipart
+                    )
                 )
-
-        if image_format_str == "exr (multichannel)":
+        if multipart:
             # AOVs are merged in m-channel file, only main layer is rendered
-            self.multipart = True
             return products
 
         # handle aovs from references
diff --git a/openpype/modules/deadline/plugins/publish/submit_publish_job.py b/openpype/modules/deadline/plugins/publish/submit_publish_job.py
index 7e39a644a2..8f8f4246dd 100644
--- a/openpype/modules/deadline/plugins/publish/submit_publish_job.py
+++ b/openpype/modules/deadline/plugins/publish/submit_publish_job.py
@@ -514,6 +514,7 @@ class ProcessSubmittedJobOnFarm(pyblish.api.InstancePlugin):
             # toggle preview on if multipart is on
 
             if instance_data.get("multipartExr"):
+                self.log.debug("Adding preview tag because its multipartExr")
                 preview = True
             self.log.debug("preview:{}".format(preview))
             new_instance = deepcopy(instance_data)
@@ -593,6 +594,9 @@ class ProcessSubmittedJobOnFarm(pyblish.api.InstancePlugin):
             if instance["useSequenceForReview"]:
                 # toggle preview on if multipart is on
                 if instance.get("multipartExr", False):
+                    self.log.debug(
+                        "Adding preview tag because its multipartExr"
+                    )
                     preview = True
                 else:
                     render_file_name = list(collection)[0]
@@ -700,8 +704,14 @@ class ProcessSubmittedJobOnFarm(pyblish.api.InstancePlugin):
         if preview:
             if "ftrack" not in families:
                 if os.environ.get("FTRACK_SERVER"):
+                    self.log.debug(
+                        "Adding \"ftrack\" to families because of preview tag."
+                    )
                     families.append("ftrack")
             if "review" not in families:
+                self.log.debug(
+                    "Adding \"review\" to families because of preview tag."
+                )
                 families.append("review")
             instance["families"] = families