Database backup feature doesn't work on export

[volgan]

ok heres my issue

I do weekly DB backups and this week i downloaded my DB through the vbulletin db backup feature, so when i open it i get all these weird symbols on the tables

Attachments
signature tables,
picture tables

any thing that has to do with anything being uploaded into vbulletin and it doesn't show right in the sql file i downloaded so is their a way to fix this issue for me because where planning on moving to another host soon and we cannot move yet because our db backups are funky looking, so can u help us with this known issue where experiencing ?