Hello Gastón,
Do you know when this started happening for the first time? Did you make any modifications which might be causing issue that you described? Your database is corrupted and exporting/importing it does not change anything because we still have the same corrupted data that we use.
What I would suggest you to do is to try to remember when was the first time that this occurred and if possible try to import older data and see if that fixes it.
Best Regards,
David D.
HansaWorld Support