I have marketpress installed and upon setup it created the store page along with a sub-menu containing three items:
I can remove the dropdown from the menu by removing the 'store' item and then adding the store 'page' back in... This removal and reinsertion breaks the connection to any sub-menu, so removing the dropdown from the resulting store item in the main menu
To then add any needed bits of the sub-menu back in I would have to create them as 'custom' links under the 'store' item since they do not appear to exist anywhere in any manageable form (pages, posts etc...).
So, where do the above 'sub-pages' come from and why do neither they nor the sub-menu appear anywhere within admin... I've checked store settings, theme menus, pages, posts, and there is no option to 'bulk' show/hide the store sub-menu either. They appear effectively to be invisible.