Hey all,
After running through all the good steps in this thread, I still was having a very similar issue to the original one. I found out that an old, totally separate cinematic, that referenced the same level, was somehow being fully referenced for camera and actor positioning in the cinematic that was being loaded into MRQ. The only similarity was them sharing the same level, the name of the cinematic and even all the actors were different between them.
After I deleted the old cinematic entirely from the content browser, my current cinematic started rendering with the correct camera. Wow! Crazy hang up on Ver 5.0.3. I’ve been loving MRQ since its release but definitely have had some tough errors to work through.
Hope that helps someone.