I'm using MarketPress for a multisite. (It's GREAT BTW) but I've encountered a problem with template changes retrofitting sites already set up.
I'm using "New Blog Template Plug In" that I downloaded from WPMU
If I make changes to a template they show up when I create a new site, but those changes aren't getting applied to sites I already built assigning that template.
For example: I needed to add a global Category. I added it to Product Categories on the Template Site. When I make a new site, the Categories list includes the new one. But when I edited a product on an already-built site, that new category doesn't show up on the list of options on the Product post - or on the Product Categories list within that particular site.