ZBXNEXT-5228 involved changes in export XML schema. In Zabbix 4.2, host TLS connection was defined like:
Starting with 4.4, TLS is defined as:
Changes made to implement this change was done wrongly (see
ZBX-17165 for more details). Starting from 5.0, this should be fixed by adopting API for new data structure. CTransformImportConverter involved in ZBX-17165 should be removed from Zabbix 5.0.