Closed Captions are not importing from a Storyline file

Hello,

I have been trying to resolve a problem intermittently for the past week.

I have created six (6) Storyline files of the same course in different languages. When I import each Storyline file into a main Storyline file, the 1st Storyline file's Closed Captions overrides the other language's Closed Captions.

This has worked in other 'Multi-language' courses I have created, imported, etc.

I saved each Storyline file with a new name and removed any unnecessary JavaScript from both the Master Slides and normal slides.

My organisation has not been approved for the new Localisation feature in the foreseeable future (the licence upgrade will not happen for a few more months).

I have attached an example below.