Issue with frame rate - Getting project ready for Resolve

Hello,

I am working in premiere and need to expoft an xml. for my colourist. I shot some of the footage at 60 fps. Before editing I interpreted this footage to be 24.976 to match the rest of my footage and get the slow mo effect. Now I need to provide him with a cut where the footage is in its original form. I went back and interpreted these files to be in their original 60 fps form. BUT on the timeline now these clips have all slid to different parts of the clips.  Why is this and how do I properly switch between frame rates without impacting my edit?