Media Encoder 2020 thinks files are offline when they are online

I am trying to queue up two very long exports in media encoder. One at a high bitrate  (140Mbps) and the same video at a more reasonable bitrate (30Mbps). Media Encoder states that the same two files are offline for each export, but they are clearly online, available and playable.

I did the 12 hour export, only to find the files replaced by the offline media graphic. How do I fix this issue, or do I just have to export these files one at a time in Premiere Pro?