fix: fix sys overwrite when copying files

Author: stevenle

.changeset/chilled-poems-walk.md

@@ -0,0 +1,5 @@
+---
+'@blinkk/root-cms': patch
+---
+
+fix: fix sys overwrite when copying files

packages/root-cms/ui/utils/doc.ts

@@ -490,7 +490,7 @@ export async function cmsCreateDoc(
   };
 
   // Preserve "sys" values when copying and overwriting a doc.
-  if (doc.exists() && !options?.overwrite) {
+  if (doc.exists() && options?.overwrite) {
     const oldData = doc.data();
     data.sys = {
       ...oldData.sys,