Old Global product and categories deleted still showing

my old global products, categories and tags once deleted are still showing on the global shortcodes of marketpress.
As this is a very old issue with many tickets going on where apparently we can't find a solution, would you be able to help me and let me know how can I delete those old products, categories and tags manually from the DB?
At least I can use those global shortcodes!
The problem seems to be only for the old items. the new and deleted ones it seems to work fine. So maybe is just a DB problem. not sure.