I did not test the importer as I did not buy xenforo yet. I just assumed the worst - and I got right. I understand how the importers - all currently available ones from all manufacturers - work. It would be just much more useful if there would be an importer from xenforo for other forum software with the option, that when you import to a complete empty xenforo community, that in this case all deleted import-IDs are created and then deleted for xenforo. Example: First vbulletin showthread IDs are 3, 6.
- The importer checks for ID 1: Not available. Create ID. Delete ID 1
- The importer checks for ID 2: Not available. Create ID. Delete ID 2
- The importer checks for ID 3: Import this ID. This will be ID 3
- The importer checks for ID 4: Not available. Create ID. Delete ID 4
- The importer checks for ID 5: Not available. Create ID. Delete ID 5
- The importer checks for ID 6: Import this ID. This will be ID 6
I don't understand where the big downside of this is. In this case another table for oldids/newids is not needed. Also redirects are very easy as the IDs will be the same. Yes, it is different from what the vbulletin importer does. But the xenforo vbulletin importer should be different. And this would be a huge improvement.