## Problem
When you delete a collection and recreate it, any navigation menu items pointing to that collection silently disappear from the menu.
## Cause
Shopify stores menu links using the collection's internal GID (not its handle), so when a collection is deleted and recreated it gets a new GID — the old menu link becomes invalid and the item drops out of the nav.
## Solution
After recreating a collection, re-add it to the menu using `shopify_update_menu` and reference it by collection handle (not numeric ID). The MCP resolves handles to the correct new GIDs automatically, so the link will point to the right collection.
## Tools
`shopify_update_menu`, `shopify_create_collection`, `shopify_list_menus`