First , go to your database in PhpMyAdmin Second , go to catalogue_items and find the rare you want to put in the limited edition [ Mostly found in page number 34 ]
Third , click Copy and put ID as random like 43882092
Put Page ID as the page ID of Limited edition [ Hope you know how to find it ]
Items ID and Catalogue name will be automatically there
After filling all those credits and pixels and amount , click Go
Now say :update_catalogue and see the weekly rare
How do I remove the last weekly rare?
Simple. Go to the last page of your catalogue_items and find the rare that was lastly in the limited editions and click Delete
Why do I want to copy it and not edit it?
Just do it if you need the rare both in Staff catalogue and in weekly rares
And...
If you want to add a special page only for staff, go to PhpMyAdmin > Your database > catalogue_pages > and make a new page that you want for staff, and type the rank ID whom you wish the staff page should work for, in the minimum_rank tab
Tip: If you want to know the rank ID, see it in ranks table