CineCameraActor in Level Blueprint

Hi there. I’ve been struggling with this problem for a few days and haven’t found the solution online or on my own. I’m trying to use the CineCamera’s location in my Level Blueprint. I’ve got a Material Parameter Collection and associated materials that depend on it. Can it be used this way?

When I reference a CineCameraActor that is not a Track in the Level Sequence, all seems well (e.g., CineCameraActor7). But if it is (e.g., CineCameraActor8), then after compiling and saving, the reference turns into “Unknown” and I get a generic “Warning”. See images:

Thanks for any help you can offer.