Issues when importing ML archive

Hello, I just imported (twice) in Thunderbird (local folders) the mbox archive for debops-users via "ImportExportTools NG". The process ends with no errors and 264 messages imported but then some are blank. As reference the recent "Report of our video call" by Imre is blank in both the imports and I can only see Imre's .asc file. It seems like all the email having a .asc file attached turn blank. Does anyone else have the same issue? -- Damiano Venturin https://dam.venturin.net