I installed BIDS 2012 but I think it just integrates Visual Studio 2010 within it's shell, and in my case it detects my 2010 packages but when I try to open them I get error:

Unsupported. This version of Vicual Studio does not have the following project types installed or does not support them:

..\ForeachLoopPractice\SSISPractice.dtproj

I would be happy to recreate the package in 2012, but don't know how to open a brand new Integration Services Project. I click on SQL Server Template, then SQL Server Database Project, and it takes me to a database design window. No Integration Services in sight.

So if someone else has insight into this crazy problem, I'd love to read it.