What's the easiest way of moving several projects into 1, for live use?

My band has used Reaper to record a demo. Now we want to move everything into one project so we can run a click and backing tracks for live performances. My question is how can we move everything while maintaining tempo and time signature changes? Am I going to have to render the tracks and apply tempo changes later, or is there a way to copy/paste these tempo and time changes?

hey, you remind me of 'project tabs' - they are win. install sws/s&m extension if not done that yet, open all your projects up as project tabs, noting the offline fx /media options (r-click a tab)to save cpu/mem. at the end of each project (except last in list) place a marker and edit it and type in !40861 which is the command ID for 'next project tab' its a 'marker action', needs 'enable marker actions' to be ticked in sws options menu, it is by default i think. also use the action SWS: save list of open projects. and recall that list at your gig with the associated 'open' action. of course can have 'next project tab' just assigned to a key, so you can hit that when ready to go to next tune. however rendering everything to stereo files/stems is easier on resources imo but you may be doing something where you need the project editable?

Interesting I had never really thought of that. I'll look into it when I get home. Is there a way to use regions to my advantage here? I don't really use them but I recall reading that you can retain tempo and time info when using regions. I also want everything in 1 project for consistency. I think it would be easier to get all tracks to a similar level if their all in 1 project