AME 25.3 Not Embedding 608 Captions

I'm trying to export .mxf files for braodcast. Exporting from Premiere Pro 25.3 works fine. However, in AME (also 25.3) I am only getting the 708 caption track and not the 608.

I'm using the same export preset in both programs. In both programs, I see 608 and 708 caption tracks on the export settings page. I found that if I check the "Import sequences natively" option, AME will export both caption tracks, but that causes a bunch of media to become offline. Media that is online in Premiere pro.

I believe this to be a bug, but any help would be appreciated. Thanks.