Dependencies missing in Game Map

Hello!

One of my users created a Game Map about half a year ago via the moodle Content Bank. 
This one is still working in moodle right now but as soon as anything is changed it stops working.
When it is copied via the course or activity copy tool of moodle, it also stops working.

The comparison of the copied files and the one original that still works shows that dependencies are missing.
The browser specifically says that there was an error loading Advanced Text 1.1

I tried reinstalling the content type, the library, merging the ZIPs, nothing worked out so far.
I uploaded the file here, saved it and downloaded it again but it didn't help either.

Can anyone help as to where the dependencies have gone, if they will return or if there is any way I can make the copied files working or the old file editable, without losing content?

Thanks and best, 
Emmy