With v3.5.4 I can incompletly import 2 ZIPs and 1 is not working.
Incompletly: from the console Error: Error: Malformed OneStore data: not a legacy OneStore file
Error: Error: Malformed OneStore data: not a legacy OneStore file
Not working: error message ADM-ZIP: Invalid CEN header (bad signature)
ADM-ZIP: Invalid CEN header (bad signature)