If you use "Replace Footage" on a PC, then open the project on a Mac, it points to the wrong media.
If you use "Replace Footage" on a PC, then open the project on a Mac, it points to the old pre-replaced version of the file.
1. On a PC version of Premiere, use "Replace Footage" to swap a shot out. Each of the shots have unique names - ie, clipname_r01 gets replaced with clipname_r02. These shots are Prores Quickimes rendered from Unreal Engine.
2. Save the project and open it on a Mac version of Premiere. Although the project says it is pointing to clipname_r02, it's actually showing clipname_r01.
3. If you "Reveal in Finder..." on clipname_r02, it opens clipname_r01 in the Finder.
4. The only fix is to use 'Replace Footage" again on the Mac, ie replace clipname_r02 with clipname_r02 again.
PC PP 25.3.0
Mac PP 25.3.0
