These fields are set using IDs from the previous CORE service. There was an incorrect assumption that these fields were integers so we were casting them as such. We have discovered that these fields are strings (e.g., `027`) so this change adjusts our types.
* Fix spec description
* add test and code for logging old id of status discrepancies
* add test and code for logging all case logs with status discrepancies
* lint fixes
* fix spec descriptions
* Now we raise an exception if a non-existing organisation is referenced by a case log
* The void date is not imported if it is after the tenancy start date