my own site, successfully migrated just over a week ago
I have been following your progress on the YaBB forum, on here & on your forum, congratulations on your efforts.

I must also thank you for pointing the way to achieve the YaBB 2.5 to SMF 2.0.1 conversion, & for persuading me to give it a shot.
Are the files there?
They are all in the Attachments folder & database, so it looks as if the SMF recoding gets confused in the process.
As no ideas have been suggested, it looks as though I will have to manually upload the attachments to the relevent posts after I go live with SMF.
There are only 1,200 of them, so shouldn't take me more than a week or two!

Apart from that the conversion went well, now learning how to configure everything.