XML import/export incompatibility between Aris v9.6 and v9.7?

We run ARIS v96. We are trying to import models  from a partner who has exported them from  ARIS v9.7. But the import fails.  XML import the other way seems to go OK.

Is this a known problem? Any workarounds?

I had expected xml import/export compatibility between v9.x versions. Or at least a backward compatibility option in the export.