Attachments!!!
 

I've imporred my board phpBB 2 to vB 3.8.4 PL1.
I've imported attachments too.
Next* I've moved attachments from database to files system. When vB asked my "delete attachmets from database?"* I sad: yes (300 per session). I've waited 2 hours (10 GB attachmets to delete) and what I see? ****! Attachments are in the database (and on the ftp sevrer). So I deleted attachments from database manually. And that was probably my mistake beacuse I can not see any attachment on my board now.
Can you explain my that?
Why attachments were not deleted from the database?