diff --git a/truenas_migrate.py b/truenas_migrate.py
index 292bddf..d7fcada 100644
--- a/truenas_migrate.py
+++ b/truenas_migrate.py
@@ -539,16 +539,33 @@ def list_archive_and_exit(tar_path: str) -> None:
 
 # Read-only / server-generated fields that must NOT be sent on create/update
 _SMB_SHARE_READONLY  = frozenset({"id", "locked"})
-_NFS_SHARE_READONLY  = frozenset({"id", "locked"})
 _SMB_CONFIG_READONLY = frozenset({"id", "server_sid"})
 
+# CORE SMB share fields that do not exist in the SCALE API
+_SMB_SHARE_CORE_EXTRAS = frozenset({
+    "vuid",   # server-generated Time Machine UUID; SCALE sets this automatically
+})
+
+# CORE NFS share fields that do not exist in the SCALE API
+_NFS_SHARE_CORE_EXTRAS = frozenset({
+    "paths",    # CORE uses a list; SCALE uses a single "path" string (converted below)
+    "alldirs",  # removed in SCALE
+    "quiet",    # removed in SCALE
+})
+
 
 def _smb_share_payload(share: dict) -> dict:
-    return {k: v for k, v in share.items() if k not in _SMB_SHARE_READONLY}
+    exclude = _SMB_SHARE_READONLY | _SMB_SHARE_CORE_EXTRAS
+    return {k: v for k, v in share.items() if k not in exclude}
 
 
 def _nfs_share_payload(share: dict) -> dict:
-    return {k: v for k, v in share.items() if k not in _NFS_SHARE_READONLY}
+    payload = {k: v for k, v in share.items()
+               if k not in {"id", "locked"} | _NFS_SHARE_CORE_EXTRAS}
+    # CORE stores export paths as a list under "paths"; SCALE expects a single "path" string.
+    if "path" not in payload and share.get("paths"):
+        payload["path"] = share["paths"][0]
+    return payload
 
 
 def _smb_config_payload(config: dict) -> dict:
@@ -952,7 +969,10 @@ async def migrate_nfs_shares(
     log.info("  Destination has %d existing NFS share(s).", len(existing_paths))
 
     for share in shares:
-        path = share.get("path", "").rstrip("/")
+        # CORE archives store paths as a list; SCALE uses a single string.
+        core_paths = share.get("paths") or []
+        path = (share.get("path") or (core_paths[0] if core_paths else "")).rstrip("/")
+        all_paths = [p.rstrip("/") for p in (core_paths if core_paths else ([path] if path else []))]
         log.info("── NFS export %r", path)
 
         if path in existing_paths:
@@ -966,8 +986,7 @@ async def migrate_nfs_shares(
         if dry_run:
             log.info("   [DRY RUN] would create NFS export for %r", path)
             summary.nfs_created += 1
-            if path:
-                summary.paths_to_create.append(path)
+            summary.paths_to_create.extend(all_paths)
             continue
 
         try: