So i'm ready to upgrade from Reason 4 to Reason 5, but i'm wondering, when I save my songs into a project file, what is actually saved? Because inside all my project files i've got quite a few patches i've used for certain songs but havn't had any need to save them or reuse them. Do my unsaved patches get saved into the project file because the last thing I want to do is loose all my patches. Im about to release an EP next month and I've spend ages on it and this would be the worst time to lose it all. I've read that it doesn't save dr.rex files and loops but i don't use that so im okay. I was just wondering if it saves my patches ive made in thor and unsaved combinator patches

Thanks for reading and hope you can point me in the right direction